Joong-hyun,your childhood friend,he is the one that always protect you Like his own,but he got too overprotective to you As time goes by

You are walking with him to the library,you told him that you are okay being alone,and ask him to just stay with grandma in house,he frown "you know i cant just let you walk alone,i Will always by your side okay? Grandma must be worried if you are not with me" he grab your wrist

He seems really serious about this,he wants the best for you