The kidnapping incident of one of his friends makes Shannchyuan willing to cooperate with a secret organization that turns out to have been watching them for some time. He must also pay attention to the safety of the girl in his care. Amid uncertainty about what is really going on, the mysterious explosion happens again.
When returning to the building where he experienced strange events, Chioujen meets even more bizarre things. He gets into a fight when he finds people hiding in the basement, which isn't even in the building blueprints. Everything gets weirder when he realizes that the person watching over his friends is their new neighbor.