Y/N has been bestfriends with Niles since she was 4. She's had feelings for him since they were 10 Niles has too. But they don't know how each other feel, except for their siblings.Their sibling make a plan so they get together.
Tinn is in love with his best friend, Gun, who keeps dating around and getting heartbroken everytime.
Nonetheless, Tinn is always there to help Gun collect the broken pieces of his heart.