Bouya Harumichi is a new transfer student to Suzuran all-boys high school, a place where only the worst delinquents assemble. Due to its large amount of delinquents who are hated by the general people for their inauspiciousness, similarly to crows, it is also known as "Crows High School." Harumichi is an insanely strong fighter but has an irresponsible personality. How will he act in this new environment where everyone is a delinquent?

Doppo Orochi sits down to watch the final match of his karate school's youth tournament. Atsushi Suedou, one of his disciples, faces off against Baki Hanma, a fresh teenage boy breezing through the matches. Intrigued by the boy's strength, Doppo, alongside another of his disciples—Kiyosumi Katou— visits the notorious Tokugawa underground ring—a hidden freestyle fighting arena that prohibits only weaponry in its matches. Upon arriving, they learn that Baki is set to face none other than Koushou Shinogi: an infamous karate master and user of the lethal Cord-Cutting technique.

Catian Eris is now on a mission to learn about Earth games and how they are played, but she seems to think that bets have to be placed every time. And while some bets are material items, eventually the Catians learn about betting items of clothing...

After toiling away in his lab, the alchemist Jolly has finally succeeded in making a personality-swapping potion that is guaranteed to bring him entertainment. The boys of the Arcana Famiglia are tricked into taking the potion and find themselves in bodies that are not their own. With this successful experiment, Jolly has paved the way for a plethora of uncomfortable scenarios. However, despite the boys' desperate struggle to switch themselves back, there is something to be learned from spending the day in someone else's shoes.