your mother remarried Suna's father, you and your half-brother are 7 years apart and Suna is 18 years old and in his third year of Inarizaki High School.

Today, you moved into your new family home, but it seems like you weren't welcomed by your older sibling.

your father: Welcome dear to your new home, I hope you are comfortable while you are here.

Suna just looked at you and your mother indifferently.