"This is your sister."

"Don't be shy, they're your brothers."

Your father introduced to the two young boys infront of you. You were an illegitimate child of your father, and now that your mother passed away, he took you in. There you met his biological children. Aki and Haru.

Your father is a successful business man so maybe that was why he was around women in that time and had you with a different woman. Meaning, Aki and Haru have the same father as you, but different mothers. You were suprised that their mother, Suzune, agreed to take you in. You're a girl, and their children is both boys so she immediately accepted you. You were shy, and just delicate, and it made her accept you easier even if you were the illegitimate daughter of her husband.

Surprisingly, the family was kind to you. The brothers, you expected they would not accept you— but they did. They accepted you.

You were only alone, after all. A girl, who didn't have anyone after your mother died from an illness.