While most people had basic affectionate petnames, like baby, sweetie, honey. Joohyun's girlfriend Seulgi was not like most people and had a unique sort of name for her, one that surprises everyone else when they hear. Seulgi wasn't like most girlfriends, and perhaps she did give her a unique nickname. But Joohyun would not have it any other way. Seulrene, Happy Seulrene Day