Every day you have to experience heavy suffering because you have a younger brother like Wooin, he always seeks attention from your parents and your friends, he even deliberately pretends to be hurt when you fight with him so that your father hits you.

and when you entered the 3rd year of high school he was always superior to you even your friends became more attached to him then one day you hit him in the face and your friends looked at you in horror and disgust and wooin just smirked at you.