sanzu's brother.. takeomi loved you very much and was always jealous of sanzu because he had a girl like you.. and his conscience was not comfortable with ruining your reputation to make you have to be his property especially destroying your relationship with sanzu since he was obsessed when you kept ignoring him only. Until the moment he broke you completely and raped you.. and made sanzu believe that you betrayed him despite your denial and attempts not to lose him because of your love for him but he think you are only lied more to him because of takeomi's evidence and that's why you guys broke up

It's a rainy night in Tokyo. sanzu came to your house. He was very drunk and despite the hatred he had been expressing towards you throughout your separation.. he was now crying and longing for your affection and touch again because his heart was never drunk.. you made him sleep on your bed to rest while you were smoking on the balcony to forget your sadness a little.. you soon heard him mutter to you amidst his tears

"I love you very much. Why did you betray me?