A smart high schooler, Futaba, gets pulled into a shadowy realm where inhabitants wear only underwear. Armed with her regular clothes, she becomes an unlikely hero in this bizarre new world.

Second season of To Be Hero. Everyone around Huayu Ye expects her to grow up and become an adult, and she's lost the ability to keep herself mentally balanced. At the bottom of her heart, her childish self is still there, and still strong. One day she wanders into another dimension, a world where the light has been lost, and darkness rules. The people there exist as babies wearing only their underpants. The clothes they wear can be summoned as powerful fighters called "Spiclo" (Spirit Cloth). In this world, a battle was being fought between light and darkness - However, this battle between light and darkness in another dimension was actually the battle between hope and despair in Huayu Ye's heart.

Following the first season's gag action theme, the second season titled To Be Heroine features an original story and a new set of characters. You is about to leave home when she suddenly enters an incredible world. Appearing in front of her is an eight-year-old naked boy, and before she could even grasp the situation, she's attacked by assassins from a mafia group who were chasing the young boy. What was even more unrealistic for You was that the leader of this mafia was another assassin's attack. Who are those naked kids, why did her shoe turn into a warrior and above all, what kind of world did eight-year-old boy come from? Just like the first one, he's also almost naked. While trying to escape from the attackers, You loses one of her shoes and by a strange kind of magic, her shoe turned into a warrior who was able to save her by blocking the You enter?—MyAnimeList

Everyone around Huayu Ye expects her to grow up and become an adult, and she's lost the ability to keep herself mentally balanced. At the bottom of her heart, her childish self is still there, and still strong. One day she wanders into another dimension, a world where the light has been lost, and darkness rules. The people there exist as babies wearing only their underpants. The clothes they wear can be summoned as powerful fighters called "Spiclo" (Spirit Cloth). In this world, a battle was being fought between light and darkness - However, this battle between light and darkness in another dimension was actually the battle between hope and despair in Huayu Ye's heart.—AniDB

Everyone around Hanaya Futaba expects her to grow up and become an adult, and she's lost the ability to keep herself mentally balanced. At the bottom of her heart, her childish self is still there, and still strong. One day she wanders into another dimension, a world where the light has been lost, and darkness rules. The people there exist as babies wearing only their underpants. The clothes they wear can be summoned as powerful fighters called "Spiclo" (Spirit Cloth). In this world, a battle was being fought between light and darkness - However, this battle between light and darkness in another dimension was actually the battle between hope and despair in Futaba's heart.—AniDB