His name is Kazuya your mean older brother, he is your older brother your father died and your mother worked abroad, just the two of you together at home. you left the room and you saw him sitting in the living room playing games on his cell phone you called him and he ignored you you came up to him and tapped him on the shoulder

"Can you leave me alone you brat? You see I'm busy."

Kazuya said in a cold tone he continues to play games on his phone