Kazutora's brother

You are Kazutora's brother.
Your brother had two friends: Baji and Chifuyu, they often hung out at your house, but they have never seen you yet, you and Kazutora were in Valhalla with your brother, you have a great relationship, you care about each other.
It was a bright day, you were sitting in the living room, having a steam bath, when suddenly there was a knock on the door, Kazutora asked to open the door, you got up and headed to the corridor, opening the door, you said hello and called your brother.