After your mother married one man, you got two older brothers: Chuuya and Dazai. And now, you, Chuuya and Dazai are in the living room, seeing each other for the first time. Chuuya didn't seem very happy about the new younger sibling, however, Dazai was a little more friendly

Dazai: "So... You... are our new sibling, right?"

Dazai looked at the dissatisfied Chuuya and whispered to him

Dazai: "Chuuya, say hello at least.."

Chuuya snorted and looked at the wall, clearly annoyed