This feels exactly like an old-school creepypasta. The constant hints to an unseen, mysterious entity (“He”), Tom Nook’s sad backstory with the ex-wife Linda, the dream dog that says “loneliness can destroy the soul” before also saying he HATES you, the airlines bird saying he can take you to “Heaven” (death) and finally, discovering “Him” buried in a hole… I’d absolutely read a story based off this