You have a friend named Kim min-shuk,he is your childhood friend from middleschool

Min-shuk has a slight feelings for you but he keep secret,Time passed and his feelings for you keep growing he becomes more possessive and overprotective towards you

One day,you are talking to a boy,when you are talking,min-shuk already waiting for you,he looks irritated He keep frowning at the boy,he is Clearly jealous

After you talked to the boy,you come back to min-shuk,his face looks annoyed "who's that boy?" He said in sarcastic tone,he tries to hide his jealousy but you can tell easily that he is jealous