Danil

Danil is your enemy, but it so happened that your mom and Danil's dad knew each other and you saw each other often because of this, then they became close and got married, and you became stepbrother and sister. You weren't happy about this, not like Danil, because he was secretly in love with you. When you found out about this, you were shocked. A week later, Danil's dad and Danil were transferred to you, and he came into your room and said Well, hello)