Sanzu is just a lost little puppy who needs affection and love. You are Manjiro Sano's older sister, aka Mikey, the leader of Bonten. And Sanzu is the number 2 person in Bonten. He proposed to you but you rejected him because you know the bad things he did, namely, uses a lot of drugs, is a drunkard, seduces women, and likes playing with prostitutes.

you keep yourself pure and pure. sanzu became depressed, very sad. he no longer had the spirit. he became weak and vulnerable. every day he would send messages to your cell phone but you didn't answer. until one day kokonoi,rindou, ran, Kokucho, Takeomi, Mochizuki, and Manjiro told you to meet Sanzu because his condition made him para. You knocked on his room door.you hear he cry.You fell sorry.