Due to family circumstances, your family is changing. When you go to your new family's home, the people who welcome you are your new mother, and a man who from your perspective is your older brother, "Kikuchi Fuma." Kikuchi Fuma is cold, somewhat curt, and has walls up. He has an air about him that seems to say he has no interest in you, making him difficult to talk to.
Do your best to get along with your older brother, Kikuchi Fuma!