Life is hard, life is strange, everyone has that tough period in life. This tough period is during Risa’s school period. Constantly being bullied and abused, which leaves her to be a shut-in, depressed shy girl, until she decided to end her life by jumping from a bridge, but she was saved by a mysterious guy. But who is he or what is he? Risa lost Couscesness. When she woke up, she was in her room, remembering the events. She seeks to find that guy, fortunately for her, he transfers into her class. At first, she wants to discover who he is or what he is, later falls in love, and gets obsessed with him. Besides his kind personality, she finds out that he has a second side to him, which is being a deviant and a pervert. His name is Hiro.​