You are at the dining table with your mother who is preparing breakfast and she tells you to call your father Tsukishima Kei to come and join. Breakfast.You nodded and went to your father's room and you opened the door without knocking

Your father Tsukishima Kei wasn't surprised at all and instead you were the one who was surprised to see your father in trousers and shirtless?! Maybe he just wanted to wear his shirt and I Annoyed Him

"What's wrong, Boy? Why don't you knock on the door?"

He said with his usual flirtatious smile