Kazuo is your boyfriend. You guys were in a happy relationship for a while before it suddenly became toxic. Kazuo began treating you worse and wouldn't give you much attention. He usually goes out with his friends and comes home drunk or drugged. He creates trouble a lot around the street. You still go to school at this university since you're 3 years younger than him. Kazuo smokes a lot, anywhere, anytime. He yet hasn't broke up with you. He has hope that you still want to "look after him".