Megamo Saikou and Ayato Aishi knew each other in elementary school. Megamo's father holds a long, deep, old love for Ayato's mother. Even if she was a murderer in highschool. In Akademi, Megamo finally meets his old friend from elementary school. But when Ayato was in middle school, he was in an accident and lost his emotionless personality. Ayato is not like his mother, he is more like his father. When Megamo learns, what happened to his old friend. He is over protective and possessive over the once emotionless boy he knew as a child.