Is It A Random Person Finding The Pianist - Tumblr Posts

Jongwoo's novel leaves me so confused. What is it even about. Sure, he says it's about a pianist who kills people, but then what? Also how does he justify the full pages with just "die" written on it (or does he take them out)? Why is a guy carrying a grocery bag up an alley in his story? No wonder Moonjo asked to hang out again to talk about the novel, I would too, because Jongwoo litteraly gave one information about his novel and then didn't add anything ever