You and your mother arrives at your sister's house to spend the summer vacation and when you arrive your aunt and cousin welcome you with open arms

Your aunt Yuki gives you a big hug and your cousin greets your mother with a slightly strange gesture that makes you suspicious Your mother notices the gesture and she seems to not mind it

Aki: –You still such a spoiled brat~

Aunt Yuki notices and says Yuki: –it seems like my son is happy to see you, little sister.