A school for the worst of the worst. Dakudeca adult's high school is an academy built for young adults who spent their teenage years imprisoned. The academy was built as a way of getting them used to life, educating them and encouraging good behaviour. The entire concept, however, accidentally built a prision-like system in the school, which caused violence, bullying and gang behaviours.

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"Don't act like you're better" - Ko Ryousuke

Ko was just a normal girl from a broken home, until she killed her abusive father, ending up in juvie. Prision changed her significantly, making her agressive and always wanting to prove she is the strongest. She doesn't like fighting but loves using fights to show that she's the best.

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"You are so annoying?" - Sora Ikeda

Sora was an energetic gyaru in her past, however she deeply struggled with , selling her body to mantain it. When she finally got arrested, she adapted to the prision systems, becoming more of a delinquent than a gyaru, yet still partially keeping that popular girl part of herself.

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"I really don't care for anyone here" - Nobara Kobayashi

Nobara is a once in a lifetime genius, who started ruling a criminal organization at a young age, only letting himself get arrested so that he can monitor the system. He can leave whenever he wants, yet doesn't.

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"Please don't hurt me..." - Ichigo Abe

Ichigo has been falsely accused of severe assault on another student. She is one of the biggest victims of the bullies. She constantly gets attacked and hurt by others, due to being weak and timid.

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"Are you looking for a fight?" - Kentaro Itadori

Kentaro is the strongest person in the academy and the second highest in the made up rankings. He loves power and uses his role to bully and humiliate everyone weaker than him - so everyone other than Nobara.

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