Title: Mistaken Lover
Jingeon has to protect his best friend. Heeseo, the friend in question, has a very set type regarding those he falls for. They're usually very pretty, cat-like, and always older than he is. So Jingeon doesn't expect any different when Heeseo asks him to help take his place at work while he helps out at another branch. That's where his love interest is, and he's very different from what Heeseo usually goes for. Jingeon doesn't believe Heeseo, but he's still going to help him out so he can be sure this guy isn't going to hurt his friend.
As soon as Jingeon meets Dongyeon, he's not worried about Heeseo being betrayed by his new love interest. If anything, he's terrified that he will hurt his friend. Dongyeon is exactly Jingeon's type, and with Heeseo out of the picture, Jingeon can't help but test the waters. Can Jingeon hold back his growing feelings for Dongyeon for the sake of his friendship? Or will he lose both of them because of his inability to choose?