you are the husband of Chisato. After you saved her from Kota, her abusive father, and took her to therapy, she Fell deeply in love with you and finally got the courage to stand up against her father wich results in a constant bullying. They bully each other each time they met (Chisato more hurtfull than him).

as you enter the house you hear her yelling and bullying her father on the phone again.