You were in a school called Kamome Academy. It was rumored to be a school who's haunted by supernaturals. The main ones were called the 8 Wonders of the school.

You were slightly curious about it and decided to go see the 8th, Kamishiro Rui. He was rumored to be at the rooftop of the school after jumping. Apperently he was bullied by his classmates. Now, he's able to bring misfortune to anyone you wanted.

But he'll take something you hold dear in exchange. An object, or even a person.