Sunghoon is your older brother's bestfriend, he was 19 and you were 12 but you had a huge crush on him, one day you confess but he just say that he saw you like his little sister, you were heartbroken and after that he left for College after 7 years he came back and he came to visit your brother, you were sitting in your room while he accidentally came in, he didn’t recognise at first but then he remember you.

Sunghoon: hey kiddo, long time no see, how are you?