Overall, this was actually a pretty fun read. Despite the concept, it didn't purely rely on gore and go for shock value too much like a lot of these sorts of manga do. It had some moments of course, but it actually had a decent amount of thought put into the story, and it wasn't just endless despair and hardships for the main character. The ending was a bit rushed and the protagonist fell into the "everyone has good in them" trope, but it managed to tie up all the loose ends pretty well.
Honestly, this was surprisingly refreshing compared to most of the horror genre. My only complaint was the pig mascot, felt a bit unnecessary and over the top.