Запись деятельности клуба Хифу: Запечатанная эзотерическая история

The narrative tells of two ordinary students, Meribell Horne and Renko Usami, who have organized a club for paranormal phenomena called "Hifu," with themselves as the only members. One day, they discover a mysterious artifact from the mystical world of Gensokyo, where youkai reside. The artifact piques the girls' interest, and they begin to investigate it, seeking to learn as much as possible about the mystical world and its inhabitants. What secrets await the friends to uncover? What lies ahead for them? And what is this mysterious world, populated by youkai?