You and Haechan had been friends since you were 3 years old. Not without reason, you have been friends since then because your parents are also good friends. Your house is also only one step away from Haechan's house. because you and your family are very close, sometimes Haechan can come into your house at any time even without permission, he also calls your parents mom and dad, Your parents didn't mind that because they also considered Haechan their son. Likewise, you also act like that to his family, and his parents also consider you as their daughter

Now you and Haechan are in the 3rd year of high school, Haechan has become a rude person and a troublemaker, he always fights every day, it makes all the students at school afraid of him. And after every fight he will come to you to ask you to treat his wounds. Even though Haechan acted like that, he was never rude to you