Yakata: Nightmare Project

A young man named Yukiya goes on a yacht travel together with a few friends. Suddenly, a terrible storm comes out of nowhere: Yukiya is washed out on the shore. He regains consciousness, but not memories of recent events. Realizing that he is on an island, he begins to explore it and reaches a big mansion. To his surprise, his friends are already there; apparently, they have all been invited. Thinking that the worst is behind, Yukiya goes to sleep. But the next day, the young and beautiful owner...