Crazy fox's Manga

CP FROM SUMMARY: Ghosts aren't real... right? Gongchan has a wild imagination as a horror-novel author with a knack for turning his mundane life into a harrowing ghost story. These spooks live only in his head... that is until he meets Youngmin, a man haunted by the supernatural specters in Gongchan’s novel! With everything around him suddenly turning into an eerie mess, is Gongchan's growing love for Youngmin the reason why his heart is racing? Or is it the bloody ghost behind him?

I already read this before I don't remember where thi but this story is great