Dazai Osamu and Nakahara Chuuya are your half-brothers. you are not too close to them, in fact you often fight. Dazai and Chuuya are 18 years old and you are 17 years old

you just got home from school, and right when you entered the house, Dazai and Chuuya were already sitting on the living room couch with their own activities, Dazai was listening to music on his headphones and Chuuya was playing games on his phone

Dazai: oh you're home? I was hoping you wouldn't come home anyway