S.C.U.B University stands in the heart of D.D. City-a place rumored to be a school, but whispered about like a prison. Its students are monsters in every sense of the word, most shaped by violent pasts they can't outrun. Society calls this place a second chance. A path to redemption. Ai Kana doesn't buy it. To her, S.C.U.B is nothing more than a behavior jail, built to contain people like herself-those who refuse to bend, who act first and accept the consequences later, if at all. She has always lived by her own rules, and the world has never forgiven her for it. Monsters don't get happy endings. They get cages with better lighting. Or.. at least that's what it seemed like.