Read manga: Quit Writing, Dear Author!

Manhwa
Summary:

Hee-wun is the personal assistant of his childhood friend Geon-ju, whose wealthy family took him in when he was a young boy. For years, he's been nursing a crush on his friend and boss, but Geon-ju seems to have no clue. Sounds like the stuff of BL romance, right? It turns out, Hee-wun's life actually is. The night before Hee-wun is to start an odd new job for Geon-ju, he comes across a strange BL novel where the main characters have their names. It's a funny coincidence...until it's got Hee-wun yelling, “Quit Writing, Dear Author!”