The Cabinet of Francis (2016)

On Jihwan's journey to get some intuition for his next novel, he encounters Hansung, his old friend and novel writer as well. Jihwan followed Hansung into a strange valley in a mountain only to fail to catch Hansung, a place where he came across a black covered note. Returning from the journey, Jihwan inquires after Hansung to Shinyoung, an associate of a publishing company who he loves, and also is a girlfriend of Hansung, only to find the eerie fact that Hansung is long dead. Jihwan struggles to write new literature after that, but things are not working out well. Jihwan accidentally finds Hansung's black covered note that novel written in Hansung's handwriting. As he was struggling writing one, Jihwan refers the novel and mimic one. After that, a phantom of Hansung haunts Jihwan, revealing intricate connection between Hansung and Jihwan.