Hayato Kisaragi is a student going to the Little Garden to go to school, where he is training to become a Slayer, human beings who can defeat monsters known as Savages, which are endangering the lives of other fellow human beings.
Hayato and Claire begin their duel, but Hayato doesn't have much experience. Claire allows him some advantages and vows not to use her full-body armaments. But then Hayato changes in the middle of the fight in a surprising way.
Hayato has to fight the Savage on the Zwei Islands, despite not having any experience. Claire, Liddy, and Erica show Hayato and Emile the ropes, but an unknown type appears and makes things difficult.
Hayato is chosen for a special mission. He's going to be the bodyguard for the famous idol, Sakura Kirishima, but events start to unfold in the shadows. Just what will his meeting with Sakura reveal?
Hayato has a small break from his bodyguard duties, and chooses to spend his time off with Emilia. Meanwhile, Sakura, the girl Hayato is supposed to protect, disappears from her hotel room.
Hayato and Sakura are attacked at the Zwei Grand Canyon. The two of them use their hundreds to try to fight back with support from their friends from the Little Garden. But then three unknown slayers with unknown intentions arrive.
Members from the Little Garden, along with Hayato, go to a southern island for relaxation after their encounter, but a certain someone shows up on a helicopter with their own motives.
Claudia joins in the mission to go and eliminate the Savage, and her goal is to separate Hayato and Emilia by getting Hayato to spend time with Claire. They end up alone, but not everything goes according to plan.
Claire engages the hunters to retrieve the stolen hundreds, but she runs into trouble immediately. Reinforcements come right away, but not before an issue arises for both friend and foe.
It's time for the school festival and everyone is excited to participate, but there's an air of suspense surrounding Vitaly's disappearance. What could she be up to?
Vitaly starts her attack on the Little Garden causing chaos everywhere. It takes a while to get everything under control, but everyone responds to the situation quickly.
Vitaly continues her rampage into the Little Garden with the intent of taking it over. Krovanh and the others fight against her control, but find it difficult to resist.
