Episode list

Tatsumi Oga, a delinquent student at the worst high school in Japan, arrives at school with a small baby who emits massive shocks of electricity whenever it cries. Tatsumi claims he found after splitting open a strange man who came floating along the river, though his friend Takayuki Furuichi does not quite believe. While at Takayuki's house, they are both approached by a demon woman named Hildegarde who claims the baby, known as Kaiser de Emperana Beelzebub IV, is the son of Devil King who was sent to Earth to find a human to raise him so he could destroy humanity. When attempts to retrieve Beelzebub fails, Hildegarde notes that Tatsumi has been chosen for the job. When Tatsumi refuses, Hildegarde attempts to kill him with a bird demon but Tatsumi manages to beat it. When he is cornered by Hildegarde and a bunch of thugs and his cheek is cut, Beelzebub goes into a tantrum that only Tatsumi is able to stop. When a damaged pylon nearly falls on Beelzebub, Tatsumi steps in to save him and resonates with Beelzebub's power, allowing him to disintegrate the pylon. After Tatsumi recovers from the ordeal, Hildegarde decides to stay with him to raise Beelzebub, much to Tatsumi's chagrin.

Hildegarde presents herself to Tatsumi's family in the wrong way, giving them a different view of the situation. She also informs Tatsumi that if he is more than 15 meters away from Baby Beel, who he nicknames, his cries may destroy the city. While dealing with this situation, Tatsumi comes up with the idea that if he can find someone stronger and more ruthless than he is he can dump Baby Beel on him and be free.

When Tatsumi loses some food for Baby Beel and he starts to get hungry, Tatsumi instead uses up a vending machine's worth of yogurt drink, revealed to be the favorite of the third year delinquent, Hajime Kanzaki. Figuring he may be worthy of dumping Baby Beel on, Tatsumi goes to see him under the pretense of becoming his henchman. After beating his current henchman, Tatsumi is asked by Kanzaki to throw him out of the window, but instead decides he is not worthy based on Baby Beel's expression and knocks him out instead.

Baby Beel is currently in a phase of non-stop urination that threatens to flood the city. Hildegarde manages to temporarily stop it with an inter-dimensional diaper, but in order to stop it completely, Tatsumi decides he needs to get a super absorbent diaper advertised on telly. Upon reaching the supermarket only to find the brand had already sold out, one of Kanzaki's henchmen, Shintarou Natsume, tells Tatsumi about the TKKH, the strongest delinquents in Ishiyama High, of which Kanzaki is one of them. Just then, the supermarket is taking hostage by a group of thugs. As Tatsumi probes everyone to see how ruthless they are, Baby Beel's diaper gets stuck on the leader's gun. While the leader considers raising Baby Beel, Tatsumi ends up changing his mind and beats him, before they decide to hover Baby Beel over the ocean to finish urinating.

After a sleep deprived night, Tatsumi notices he has a strange mark on his hand, revealed to be Zebel Spell, a symbol of the contract between him and Baby Beel. Hildegarde and Alaindelon explain that a Demon Lord's parent is a vessel for his power, and the mark will grow the more opponents Tatsumi defeats. Wanting to get rid of the mark, Tatsumi decides to give up fighting in the hopes it will make the mark smaller. Meanwhile, another member of the TKKH, Tatsuya Himekawa, hires some thugs to kidnap Hildegarde and Takayuki in order to get Tatsumi's attention. Tatsumi uses Alaindelon to sneak in and forgoes his promise to beat Tatsuya's henchmen. Tatsuya goads Tatsumi into hitting a ceramic plate hidden under his shirt, but his punch is so powerful it knocks him out anyway. Tatsuya then tries using a stun rod, but Tatsumi resists it and uses Baby Beel's power to beat him, which in turn makes his mark larger.

The mark on Tatsumi's arm goes back to its small size, much to the chagrin of Hildegarde who destroys his games console. She brings a play room for Baby Beel to play in, but upon building it, it turns out to be a magical cage that both she and Tatsumi get stuck inside. The only way to get out is to have Baby Beel solve a block puzzle toy, but he just ends up breaking it. Frustrated, Tatsumi utilizes his Zebel power to punch his way out, though it makes his mark grow big again. Rummaging through a bag of demon world toys, Baby Beel opens a chest that transforms Tatsumi and Takayuki into nurses, which can only be reversed by helping Baby Beel play Doctor. Tatsumi decides to use the opportunity to try to do good deeds and get rid of his mark, though has trouble handling the demonic medical supplies. After some failed attempts at treating some of the students, they change back after discovering an actually useful tool on Babt Beel's costume, but accidentally triggers an explosive that negates all the work Tatsumi did getting his mark down to size.

Tatsumi's family coerce him into taking Baby Beel to the park so he can make his 'park debut'. Despite making a bad impression with the other mothers, Tatsumi meets a girl named Aoi who is looking after her little brother, Kota. Aoi tries to help Tatsumi make his park debut which, partly due to the appearance of Alaindelon, does not reap much success. The general antics convince the other mothers to call over a police officer, who starts badmouthing both Tatsumi and Aoi. Before Aoi can lose her temper, Tatsumi throws him into a trash can, with Aoi coming off impressed. After Tatsumi leaves, it is revealed Aoi's true identity is that of Aoi Kunieda, leader of the Red Tails gang and one of the TKKH. Note that Aoi is actually one year older than Tatsumi. Its shows that Aoi takes to men who are strong and trustworthy.

Aoi and the Red Tails return to Ishiyama High to deal with Tatsumi, despite not knowing who he is. When Takayuki drags Tatsumi to meet her, Aoi is shocked to find Tatsumi is the one she met at the park, although he does not recognize her back. Aoi starts to fight him using powerful bokuto attacks that cut through glass, but he manages to dodge all of her attacks. Impressed by her strength, Tatsumi asks Aoi to become Baby Beel's mother which causes her to become embarrassed and run off. Afterward, Aoi seems to develop feelings towards Tatsumi. Meanwhile, another delinquent gang plots to take down Aoi.

The delinquent group, MK-5, come to confront Tatsumi, but are promptly beaten by him and Hildegarde, who catches the attention of a smitten Aoi. As Aoi's right hand ladies, Chiaki Tanimura and Nene Oomura confront Tatsumi, Hildegarde, who had heard from Tatsumi about his plans to dump Baby Beel onto Aoi, challenges her to a fight to test her strength. When Aoi returns to find Chiaki and Nene injured, she assumes Tatsumi is responsible and confronts him in a fight. In actuality, Chiaki and Nene were attacked by MK-5, under the orders of Miwa, who desires the title of Queen. Shintarou helps Nene get to Aoi to tell her the truth, but when Miwa makes his move, Tatsumi promptly beats him up. Afterward, Aoi is once again baffled by Tatsumi trying to give her Baby Beel, explaining that he's forced to raise him because of Hildegarde. Later, Aoi decides to quit the Red Tails and put Nene in charge, feeling that she is no longer able to serve as their leader.

A stray cat becomes attached to Tatsumi, causing Baby Beel to become extremely jealous and shock anyone he shows affection towards. Baby Beel challenges the cat to a fight and subsequently loses, but when a gang of fierce cats gang up on the cat for fighting in their territory, Baby Beel stands up for him, prompting Tatsumi to help out. Afterward, Baby Beel and the cat become friends. Later, Tatsumi takes Baby Beel and the cat to a play center where he once again meets Aoi in her park getup. While Baby Beel and Kota getting into heated competition with some other toddlers, Tatsumi and Aoi have a conversation full of misunderstandings, both ending with explosive results. Afterward, the cat decides to leave in order to protect his fellow strays.

Himekawa plots revenge against Tatsumi by setting him up with a poisoned sandwich, but it does not affect him due to his resilience to Hilda's cooking. He next attempts to use a popular costumed character to try to capture Baby Beel, but Tatsumi and Baby Beel notice that he's a fake due to differently colored chopsticks. He later has one of his subordinates to masquerade as a woman in an attempt to seduce Takayuki into giving him Baby Beel, but Alaindelon intervenes, transporting Himekawa and his gang to a far off island. The resulting failures leave Himekawa with no money to hire any more henchmen. And as he tries to attack Tatsumi by himself, he gets caught up in fighting against a rival gang also attempting to kill Tatsumi. Afterward, Kanzaki offers him one of his yogurt drinks, to which Himekawa repays him with a year's supply with a month long lifespan.

Baby Beel has been crying all night for the past three nights, which is causing Tatsumi and the whole neighbourhood to get very little sleep. Wanting to stop his night crying to avoid being chased out of their house, the Tatsumi family attempt to play with Baby Beel all day in order to tire him out come nighttime. Despite managing to get him to sleep, Baby Beel still wakes up and cries in the middle of the night. After Tatsumi spends the day dealing with a sleep deprived TKKH, Hilda brings a toy that calms Baby Beel down, but is even noisier than his crying.

As Ishiyama High holds an assessment test for its study-phobic students, the Great Demon Lord also holds a test for Baby Beel, requiring him to earn points by beating up various things, or run the risk of both he and Tatsumi facing remedial classes in the Demon World. With Baby Beel not showing much hope, Tatsumi decides to try to dump Baby Beel on whoever scores highest on the test. When a rival school interrupts the test, Tatsumi fights them off to allow the other students to keep on the test, earning enough points to avoid remedial lessons, later learning that the smartest student it actually Takayuki. Later, Hilda prepares a letter to the Great Demon Lord, writing reports on Tatsumi, his family and the TKKH.

As Kanzaki tries to come up with a new special move to beat Tatsumi, his followers suggest the key to Tatsumi's power is having Baby Beel on his back. Thus, Kanzaki starts training with a weighted baby doll on his back. When that plan does not work, they try finding a living substitute, which end in more embarrassing results. Meanwhile, Tatsumi takes Baby Beel to the park where they once again meet Aoi, who has lost track of Kouta. Kanzaki coincidentally finds him and deems him a worthy substitute for Baby Beel. While playing with him, he figures out the key to performing his new special move. After returning Kouta to Aoi, Kanzaki performs his special move, though it just leaves everyone confused. As Kanzaki leaves, Tatsumi admits his move was surprising.

Takayuki tells Tatsumi about the final member of the TKKH, Hidetora Tojo, mainly to get him interested about ditching Baby Beel so Alaidelon will leave him alone. Wanting Tatsumi to get beaten, Himekawa informs them that Tojo works at the beach. Tatsumi and Takayuki go there the next day and get mistaken as part-timers for a yakisoba stand, later finding that Tojo had actually been fire the previous night. As he keeps missing him, Tatsumi asks Aoi to pass on a letter of challenge to Tojo, whose henchmen find it before Aoi can rip it up. Tatsumi gets held up to their meeting, arriving only finding a pile of beat up gang members, which Tojo beat all by himself. Despite Aoi's warnings, Tatsumi looks forward to finally meeting Tojo.

Takayuki is dragged away from his tropical summer vacation against his will to join Tatsumi and Baby Beel to a public pool, though Tatsumi is soon shocked by the fact he could've gone to the tropical resort himself. While chatting with the Red Tails, Takayuki is approached by some delinquents from his old middle school and ends up going against their leader, Takashima, when they start hitting on the girls. Takayuki tries to hide in the pool, but Takashima calls more of his men and tricks the lifeguard into evacuating the pool, leaving Takayuki and a stunned Tatsumi. As Takayuki becomes surrounded, he forces Baby Beel to cry in order to shock all the delinquents before facing Tatsumi's wrath.

The Demon King sends Baby Beel some summer homework, containing a notebook which brings anything drawn in it to life. Next, Hilda brings Tatsumi to Ishiyama High to collect prints of rare, powerful beasts, aka the delinquents, by whacking them with a giant fly swatter. During the chase, Baby Beel ends up planting several carnivorous Demon Plants, one of which grows into a massive giant causing havoc until Tatsumi destroys it.

Beel gets a summer cold, causing his body to give off incredible heat. As his condition gets worse, the Zebel Spell on Tatsumi's hand disappears, leading Hilda to become frustrated towards Tatsumi for showing little care towards him. As Tatsumi tries to decide what to do, he encounters one of Tojo's henchmen, Shojo Aizawa, who seemingly outmatches Tatsumi before leaving. The next morning, both Hilda and Beel have disappeared. As Tatsumi searches for them, he encounters Tojo with Beel on his back, who challenges Tatsumi to a fight. As the two fight, Tatsumi is shocked to see what appears to be the Zebel Spell on Tojo's shoulder, before he is knocked clean into the river.

Tatsumi returns home after being defeated by Tojo to find that Hilda has returned from the Demon World with the imperial doctor, Forcas Rachmaninoff, and his assistant, Lamia, to help determine the cause of Beel's illness. He diagnoses the illness as King Fever and when Beel was trying to draw out massive amounts of demonic power, he accidentally severed the link between him and Tatsumi and found Tojo similar to Tatsumi and connects to him. Tatsumi begins a treatment to try to reconnect with Beel and enters a dream world through the effects of a Demon World drug that is shot into his head where he eventually finds a sleeping Beel in the middle of several inscribed circles that are shrouded in an electrical field. After about 6 hours of treatment, Tatsumi still has not waken up and Lamia assumes that he has died and becomes happy. Tatsumi suddenly wakes up and spanks Lamia and claims he is teaching her some manners. Hilda asks Tatsumi how he feels after having gone through the hard part of reconnecting with Beel and Tatsumi says he is in the mood to get Beel back.

Tatsumi reflects on Lamia telling him to take a shower before going to Tojo and sees a silhouette outside his bathroom window and thinks it's Lamia, but it's really Shiroyama, who takes Tatsumi to Kanzaki and Himekawa who tell him they want to team up to beat Tojo and Tatsumi agrees. On the way to Ishiyama High, they are surrounded by a large group of delinquents, which Tatsumi takes care of swiftly. Upon arriving at Ishiyama High, the rest of the school is there to confront Tatsumi, only to have Kunieda and the Red Tails take care of them for him. Tojo sets off fireworks to try to cheer up Beel and all the delinquents are captivated by them. Tatsumi confronts Tojo and Tojo is willing to give Beel back only to have Tatsumi tell him that whoever Beel wants to stay with is up to him. Beel's fever breaks and he immediately goes to Tatsumi and climbs on his head, and a flashback shows Tatsumi reconnecting the bond between him and Beel. Just as the episode ends, Tatsumi and Tojo are about to begin their fight.

The battle to decide Ishiyama's strongest has started. Oga has a tough time against Tojo's beastly strength, but.

Baby Beel's fear of insects prompts Tatsumi to give him some special training up in the mountainous village of Mapputatsu. There, he stumbles across Kunieda carrying Kota in the disguise she wore at the park with her grandfather. While Tatsumi is still unaware of her true identity as Kunieda, her grandfather develops an interest in him.

As the Zebub Spell is restored, Lamia and Dr. Forcas begins to return to the Demon World through Alaindelon. While they were being transported, Baby Beel grabbed onto Lamia and refused to let go, causing Furuichi and Tatsumi to be transported as well. All 4 of them landed in Vlad's Haunt, one of the most dangerous areas in the Demon World, with Alaindelon unconscious from transporting too many people at once. Lamia manages to contact Hilda through her cellphone, and is informed that Alaindelon's daughter might be able to transport them home safely. A Yople alien shows up, which Tatsumi punches, causing the Yople to call the creatures in Vlad's Haunt to attack the group. As the group escapes to find Alaindelon's daughter, they encounter numerous creatures, with Furuichi suffering the worst of their attacks. When the group finally reaches their destination, they realise the place was ransacked by bandits, Gare and Edda, who have kidnapped Alaindelon's daughter. As Tatsumi defeats the bandits easily, the episode ends with Furuichi realising how attractive the daughter is.

Finding Alaindelon's daughter rather attractive, Furuichi vows to rescue her while Gare and Edda led him to Tatsumi and Lamia in the village of thieves where Alaindelon's daughter, Angelica is trapped. The rescue runs smoothly until a large Demon named Vlad's Master is awakened and terrorizes the village in which Beelzebub suddenly grows huge to fight it off.

The students of Ishiyama High settle in at St. Ishiyama, with all the significant characters being placed in the same classroom. Their new homeroom teacher, Sadohara, challenges Tojo to an arm wrestle to try to establish some authority over the class, failing miserably when Tojo accidentally slams him upside-down against the wall. He then picks a second target, Tatsumi, who was sleeping in his seat, and wakes Tatsumi in order to challenge him. Baby Beel is angry to have been woken and subsequently tantrums, shocking Tatsumi and Sudohara. An aspiring delinquent from St. Ishiyama, Kazuya, goes searching for Tatsumi after hearing rumors of his strength, bringing his childhood friend Azusa with him. A gang pick a fight with Tatsumi and Furuichi in an alleyway, and upon fighting back, a gang member grabs Kazuya and Azusa, who were watching from the entrance of the alleyway, and threatens to hurt them if Tatsumi does not submit. Aoi shows up and frees them, allowing Tatsumi to now beat the gang senseless. As he's beating them, Baby Beel has a tantrum, electrocuting all of the gang members and Tatsumi. Kazuya confuses this for Tatsumi's attack. After leaving the alleyway, Kazuya begs Tatsumi to take him under his wing.

Tatsumi and Furuichi accept Kazuya as their student, after being praised on how legendary they are. Kazuya tries to copy Tatsumi to become strong like him, even making identical lunch boxes. Due to the Teimo incident, Tatsumi and Kunieda meet Kido, the teacher in charge of student life at Saint Ishiyama Academy. They receive a warning of expulsion, should they persist to cause trouble for the school. Meanwhile, Kunieda tries to learn from Azusa to be more open to men, but realises it to be impossible. In order to get Kazuya off his back, Tatsumi pretends to teach the secret technique of electric shocks, and manages to convince Kazuya successfully. Kazuya hears news of Azusa being kidnapped by a bald man suspected to be a Teimo member, and tries to rescue her with his new "powers". After Kazuya fails to land any hits, Kunieda arrives and reveals the man to be an acquaintance of her temple, and the situation is resolved.

In order to make up for forgetting his daughter's birthday, Alaindelon brought Angelica to Furuichi's house for a tour of the Human World. Unfortunately while the gifts were being retrieved from Alaindelon, a Yople alien teleported into the human world and escaped. Angelica resolves to track down the Yople, using a demon wand that transforms its user into a Magical Girl. Gathering 4 other girls - Hilda, Azusa, Honoka and Aoi, they form the 5 Fairies of Light and manages to track down the Yople at an amusement park where Tojo was working as part of the cast in a Gohan-kun theatre drama. A rival girl gang challenges Aoi while they were capturing the Yople and a fight ensures. Eventually, Furuichi manages to pin down the Yople and both of them are teleported away with Angelica's ability. Furuichi eventually returns back to the human world through Alaindelon, leaving him to wonder if he was even inside Angelica at all in the first place. Unfortunately, Angelica left before Furuichi could ask her about it.

The students of Ishiyama High are ordered to do physical examinations amongst themselves. Baby Beel gets jealous of a toy which accidentally gets stuck to Tatsumi's back, and locks himself inside of a locker to pout in protest. While trying to lure him out, the girls come into the room for their physicals, forcing Tatsumi and Furuichi to hide under the desk while the girls strip off and start measuring. The girls leave the room without seeing them, despite a few close calls, and upon the girls' departure Tatsumi and Furuichi get up from under the table and start trying to lure Baby Beel out once more. Aoi returns to the classroom moments after leaving, and finds the two of them in the room. She realizes that they have been there all along, and goes on the offensive. During the conflict Baby Beel exits the classroom through an open window and climbs into Sadohara's sports car, and locks the door behind him, which Tatsumi is unable to pull open. Baby Beel "springs a leak", filling the car. Tatsumi, unable to think of any other option, chops the car resulting in the entire shell of the car shattering.

After being shocked early in the morning by Baby Beel, Tatsumi's enthusiasm to find someone new to pass Beel onto is temporarily reborn, and upon hearing rumors of six students who excel both academically and athletically, he goes off searching for these six in the hopes that they will impress Baby Beel. Tatsumi, accompanied by Aoi, goes searching for Kazuya to get more information about the 6 Holy Knights. Meanwhile, Furuichi runs into an old friend, Miki. He warns Furuichi to stop Tatsumi getting involved with the six, and tells him that the six wear badges to identify them as Holy Knights, before promptly revealing himself to be one of them. Tatsumi finds Azusa while looking for Kazuya, and is quickly interrupted when two of the Knights show up, revealing themselves to be Alex and Sakaki. Sakaki tests Aoi's strength first by attacking her with a wooden sword, while she only has a ruler she borrowed from Azusa to defend herself with. Aoi cuts the tip of Sakaki's sword off during his attack, proving herself to be the more skilled swordsman. Tatsumi refuses to fight his opponent, Alex, and instead quizzes him while attempting to dodge his attacks. Alex gives up when he realizes Tatsumi is not taking the fight seriously, and the two knights leave the scene.

Furuichi and Tatsumi survey the school from the roof searching for emblems on people's shirts, and Azusa ends up tagging along in their search. Two students from St. Ishiyama are seen hassling two of Aoi's gang, causing Shiroyama to interject, telling them to leave. The two disgruntled students are offered a free punch by Shiroyama as compensation for breaking off their advance on the girls. They roll a large weight onto Shiroyama, hospitalizing him. Kanzaki bursts into the classroom the two boys are in later that day to get vengeance, only to be knocked out by Miki in one blow. Miki the invites the students of Ishiyama High to meet him on the roof after school. Himekawa, Natsume, Furuichi, Tatsumi and Aoi all go to the roof after school, though Furuichi stays in hiding. Another member of the 6 Holy Knights is revealed, Go, from the Amateur Radio Club. The four known members of the 6 Holy Knights are all waiting on the roof when the Ishiyama High students arrive. Natsume fights Go, while Himekawa faces Sakaki, and Tatsumi stands against Alex. Tatsumi attacks Alex, knocking him out in one punch. Miki steps in to challenge him, claiming to know Tatsumi from a long time ago, and to have surpassed him. Tatsumi claims to not recognize him, but takes him seriously, passing Baby Beel onto Aoi in order to fight properly.

The fight between Tatsumi and Miki begins, with Miki seemingly beating Tatsumi with ease. He strikes Tatsumi with a technique which Aoi recognizes to be Hakkyokuken, a martial art form from China. Tatsumi continues to fail to hurt Miki, using a variety of "special moves" which do not seem any different from his usual attacks. Miki begins to power up his most powerful technique, which he advises Tatsumi to dodge due to its power. Before he has a chance to use it, he is interrupted by Nanami, the 2nd strongest of the 6 Holy Knights. She is shortly joined by the final knight, Izuma, the strongest of the six. Aoi senses how much power he has and recognizes that they have no hope of defeating him. The students return to their classroom to find a notice, declaring all of the Ishiyama High students who were present on the rooftop expelled. The students go to the Counselor's office to complain, and are told that they have a chance to avoid expulsion - by beating the 6 Holy Knights at a sporting event at the upcoming school festival. The students reluctantly accept and leave the office.

Hilda transfers into the class to keep an eye on how things are progressing, with Alaindelon transferring into another class. The students find out the sport will be volleyball, something none of them have any experience in. The students lack motivation which Hilda promises to sort out. With the help of Alaindelon they kidnap the delinquents and force them to watch a poorly edited video of the 6 Holy Knights bad-mouthing them. The delinquents, except Furuichi, all believe in the video and become fired up, ready to beat their opponents.

Tatsumi becomes tired of practicing and walks out of the gym, itching for a fight. He finds Miki training in a nearby Dojo, and challenges him to a fight. Tatsumi takes all of Miki's attacks head on, and is clearly damaged from the strength of the attacks. Miki claims his technique is only at 70% power, but will be ready by the time the school festival arrives. Miki has a flashback to a time when Tatsumi betrayed him in the past, where Miki followed Tatsumi to fight alongside him, but Tatsumi turned on him, knocking him down and kicking him on the floor. Tatsumi finds Tojo and challenges him to a fight, looking for some insight into what his own special technique should be. Tatsumi appears to be quite beaten up after fighting Tojo, but not deterred from it at all. He claims that it is all a matter of fighting spirit, and that he is ready to win at volleyball and any fights he gets into.

The festival is underway, and Azusa is trying to run a Maid café. Furuicihi offers to help, and Azusa and her friends obey his commands blindly due to his reputation as 'The Strategist'. Furuichi persuades many of the Red Tails to dress up in Maid uniforms, claiming that this is a preliminary battle against a café that the 6 Holy Knights are running elsewhere. Hilda also gets involved, and remodels the café to be more formal. Some rowdy guests from Teimo High enter the cafe acting unruly, whom Hilda is quick to discipline.

The volleyball game begins, with both teams proving to be competent at the sport. The Ishiyama High gang commit fouls and play dirty, gaining them enough points to make the first set a close one. Izuma starts serving using a fighting technique to power the balls towards Kunieda with such power that she's unable to dig them out. Kunieda's arms are burned badly from trying to deflect the balls, and she substitutes for Furuichi, who proves to be totally useless. A determined Kunieda returns to the court and manages to start digging out Izuma's serves. The Ishiyama High students start playing earnestly, trying their hardest at last. Both teams are at match point when Izuma hits a ball that heads right to the edge of the court, beyond Kunieda's reach. Tatsumi jumps ahead and manages to return the ball, with enough speed and power that the 6 Holy Knights are unable to return it, causing Ishiyama High to win the match.

Kiriya, the man who scarred Miki and tried to attack Tatsumi in the past shows up at the volleyball match. He declares that he is seeking revenge on Tatsumi, and has taken hostages at the school to stop anyone interfering. Kiriya reveals that he had to move away to Nara previously, and this is why he is only now seeking revenge on Tatsumi. Miki, who also moved to Nara after being beaten by Tatsumi, realizes that Tatsumi had only beaten him to protect him from Kiriya when the two of them were both in Nara. Tatsumi and Miki team up to take down Kiriya's henchmen while the 6 Holy Knights, the Red tails and the TKKH incapacitated all of the Keimo High students holding the St. Ishiyama students captive. Tatsumi directly confronts Kiriya, and declares himself to be going all out. The Zebel Spell spreads over Tatsumi's arms and up and over his face as he unleashes his Zebel Blast attack, in full view of the entire school's population. Izuma quickly announces that the event was staged, and that even the Keimo High students were in on the act. As he walks out of the gym, he warns Tatsumi not to show off his demon powers in public. Tatsumi tells Hilda and Alaindelon what Izuma had said to him. At the end of the episode, we see Aoi heading towards Tatsumi to know the truth about him.

Oga and Tojo still have a score to settle with Azuma, but their fight is interrupted by a brand new teacher, who takes them all out like it was nothing at all. Who is this guy and how does he know about Beel?

Tatsumi attempts to explain the whole situation to Aoi, but him and Furuichi get stuck on remember BabyBeel's name. Not long after, a demon maid servant who looks similar to Hilda named Yolda appears, and expresses her unhappiness on the situation. Soon another 2 demon maid servants appear along with a young boy who is introduced by the maids as Lord En, BabyBeel's older brother, who has come due to BabyBeel taking too long to destroy humanity. Aoi then understands everything that's going on. BabyBeel and Lord En do not have the best relationship, where BabyBeel is constantly ignoring the attention-seeking Lord En, making him upset. Lord En is also seen to love anything to do with games.

Before destroying humanity, Lord En wants to experience everything in the human world. As Lord En is a huge fan of games and the like, he is drawn to the game centres and amusement parks there and is distracted from his original mission of destroying humanity. During the visit to Ishiyama Land it's found that he cries very easily over the slightest things that BabyBeel does or happens in general. He suggests going on a roller coaster, which everyone is against due to his crying, but still he demands to go on. He does eventually end up crying and creating fire once again on the roller coaster. Lord En then alerts Tatsumi that he may be attacked by his private guards.

It's revealed that Tojo and Suzuka know each other from the past, as they both underwent training from Saotome. Izumo and Tojo have a fight after school and Izumo reveals some of his demon powers. However Behemoth's 34 Pillar Division has arrived and causes trouble. Aoi is captured by one of the pillars named Hecatos who wants to make her his contractor so that he can use all his powers in the human world. Tatsumi and Hilda then fight together against him in order to rescue Aoi, however just before they believed they'd won Hilda is stabbed by Hecatos.

Whilst everything is in commotion, Lord En continues his tour of the human world and is now in Akihabara. As usual, he also cries due to the maids being mistaken for cosplayers and he feels left out. Kanzaki and Yuka are both spying on Tojo and Izuma's fight, until two of the pillars: Graphel and Naga interrupt the fight and beat Izuma up. Izuma is revealed to be only half demon and hasn't actually made contact with any real demons before and so his power is weaker than that of a real one. Tojo then cuts in and so does Kanzaki however Graphel does not get a chance to fight Kanzaki, although Tojo fights Graphel, unconsciously with his instincts, however they soon leave to join Hecadoth. Tatsumi attempts to beat Hecadoth using his Zebel Blast, however is blocked easily. Saotome then enters and uses his spell master magic forcing Graffel, Naga and Hecatos to retreat. Quickly, they call Lamia and Dr. Bloo to check on Hilda before it's too late.

Hilda recovers and apologizes for everything and being unable to help. Tatsumi decides to become stronger in order to protect everyone and so seeks for Aoi's grandfather to train him. After seeing Kouta come out of the shrine Tatsumi comes to the incorrect conclusion that Aoi Kunie is actually Aoi Kunieda's cousin when in fact they are the same people. Tatsumi and Teima Shadow receives pointless training from Aoi's grandfather. Saotome and Tojo talk about the incident, however Tojo doesn't understand everything about demons and mistakes them for bears and Saotome's friends.

Lamia ask Fruichi to find BabyBeel's brother but when they went game centre, they find Kanzaki, Himekawa and Yuko. Furuichi ask they for help. Meanwhile Aoi and Tatsumi went for training to be strong.

Oga is at Mapputatsu for training with Aoi's grandpa. Meanwhile, Furuichi and the gang continue their search for Lord En, but he doesn't seem to be anywhere. Will there be any progress made this episode at all?

Furuichi and Lamia have a single lead to find Lord En: He's totally hooked on online games. So the whole Ishiyama gang heads over to Himekawa's private gaming rooms to find Lord En online and figure out where he is.

Oga and Beel begin their training with Saotome, but it seems more like exercising than exorcising. Meanwhile, Furuichi and the Ishiyama gang continue their game with Lord En, but something seems off.

The show opens seeing the 2 pillars who got beaten in jail, and 2 other pillars talking to them. One is Lamia's mom. They then cut to the main gang who are tired from playing video games. Shiro acts as Lamia while talking to En. He speaks like a ditzy schoolgirl, but En buys it.

After Tatsumi came back from his training, he was renewed with a different notion, that he wanted to protect everyone, along with finally accepting the responsibility of raising Baby Beel himself. When one of the Pillars countered that he would destroy humanity, Oga contests that they're wrong, claiming that it's because he's the parent of Baby Beel, that he won't let him destroy humanity. Thus upon fighting, he introduces his new technique called the "Zebul Emblem" and "Super Milk Time" (which he learned while training with Saotome. Black Baby Beel and Baby Beel fought over the milk and Tatsumi decided to drink it himself so Black Baby-Beel And Baby-Beel don't have anything to fight on). To remove the divider between Tatsumi and Baby-Beel, he drank the milk to suddenly become powerful. Eventually, the demon power from Baby-Beel increased as he drank more, and Tatsumi defeated the two Pillar heads. Finally drinking it all, he fights the Pillar Head Naga while merged with Baby-Beel. Thus, he became Baby Beel himself with wings, and scattered the Zebul Emblem to surround the Pillar Heads. At last he defeated the three Pillar Heads, and with the top of Himekawa's hotel destroyed due to the explosion.

It's a New Year's special where the entire cast of Beelzebub acts out everyone's favorite ancient Chinese fable, Journey to the West. See the gang as Son Goku, Sanzou the monk, and everyone else in their quest to reach Tenjiku and obtain the sacred sutra.

Due to the after effects of Super Milk Time, Baby Beel and Tatsumi have swapped bodies. In order to return things back to normal, they try to look for Saotome-Sensei to see if he knows how to, however they are continuously disrupted by everyone else from the academy trying to start a fight with Tatsumi (who is currently Baby Beel). Eventually, Baby Beel runs away after being drawn to a smell, and Hilda, Furuichi and Tatsumi try to catch him, where they find him attached to Aoi. After hugging Aoi, BabyBeel runs off once again and so Hilda and Aoi have a match to see who can catch Baby Beel. Although at the end BabyBeel chooses Aoi over Hilda after she shows some of her new demon magic from training. Not long after, Aoi and Hilda attack Tatsumi(Baby Beel) when fighting over him, and just before they hit him Tatsumi and BabyBeel return to normal, leaving Tatsumi being severely hurt by the two and BabyBeel perfectly fine. Saotome-sensei then comes to school the day after.