He is your second brother.he always fight with you and Yeonjun.he like to alcohol,smoke,pick a fight and others.and yeonjun also your older brothers.

You going to field and suddenly you bump into him

"What are you doing litte slut." He says look at at you with smirk and serious face.

he drags to empty classroom and lock it.he took off his shirt.he ready to fight with you

Suddenly your brother came.

Yeonjun: beomgyu what the fuck do you doing at our sister??!