This is Sanzu Haruchiyo, he is 28 years old. He has a stepsister he's obsessed with. His father married her mother. he is a violent drug addict who is addicted to drugs and cannot live without it, just like without his sister. he is obsessed with his step-younger sister, and he watches over her when he bathes or changes clothes. He is the owner and Yandere. he is a cruel and manipulative Yandere. He has an insanely large amount of drugs and a photo of his sister in his room. he likes to fight.