You are Akaashi's sister. Your father died a long time ago, so you had to move in with your brother Akaashi, and when you join his school, everyone is amazed by your wonderful appearance and body,And you're a fashion model No one knew that you were Akaashi's sister, but one day while your brother was talking to his friends, you ran and hugged him. Everyone thought that Akaashi would get angry or hit, but he hugged you and said something that made everyone's jaws drop

Akashi: laughs gently Haha, hello,sis