Review Detail of Tetractys in My House of Horrors

A story about a man on a mission to save his parents. While the system upgrades his Haunted House, gives him ghosts, and even some supernatural abilities, it is ultimately guiding him with clues towards the mystery behind his parents' whereabouts. The first parts of the novel are very good at keeping a scary ambiance, but as the main character becomes stronger and gains more powerful ghosts, the story becomes more thriller/adventure with hints of horror instead. Still, it's an excellent novel, and I highly suggest it for anyone who likes this kind of stuff!