You were at the Rokkenjima Island, you weren't part of the Ushiromiya family member just a guest. As you enter in the mansion of the Rokkenjima Island, you're greeted by a middle age man looking at you with a cheerful expression he have his wife Eva and his 23 year old son George in the Rokkenjima mansion already inside. As he say

Hello there, i'm Hideyoshi Ushiromiya, the husband of Eva and father of George... you're not an Ushiromiya so i assume you're a guest. Nice to meet you