Welcome to Rust Lake Haunted House

Next to the Rusty Lake Hotel, a haunted house opened. The haunted house's receptionist always wore a black raven mask. A parrot named Harvey led visitors inside. Every other week, a new theme would open, drawing visitors from all over the world, including detectives, members of the Mafia, and superheroes. Whenever they were scared out of their wits and ready to leave, the black-haired boy at the entrance would hand them a flyer that read: Rusty Lake: Haunted House, Mental Health, and Fishing Center. The night before Tsuna started elementary school, he had a terrifying dream. He dreamed he boarded a huge cruise ship with a foreign boy with black hair. There were masked monsters with long arms, ugly man-eating monsters, and a terrifying female ghost. The boy led him into hiding, defeated the monsters and the ghost, and escaped the ship with him. After that, he would visit all kinds of terrifying places in his dreams with the boy. Tsuna always thought the boy was someone he'd made up, until one day his sadistic home tutor bundled him and his Guardians off to a popular haunted house overseas to toughen them up. When they arrived, a banner stretched across the haunted house: [Welcome the Tenth Vongola Boss on His Inspection Visit!] Beneath it, the boy stood smiling at him. Tsuna: Aaaaaah, let me go! I don't want to go to those places again! * 1. A crossover of horror games, with lots of original worldbuilding. 2. The protagonist is the god of Rusty Lake, whose duty is to purify black memories (black cubes). 3. The protagonist extracts the memories (black cubes) of the protagonists from various horror games and sets them up in the haunted house as its attractions. 4. The pairing is with the Tenth Boss. Theme: How can a god change the human world?