Eroded by "Meikoku" the space to absorb life energy, a school controlled by lust. By "Meikoku" the sexual desire cannot be controled, with Sister Eri in the confession room, protagonist Asama that ejaculates inside Aoi that working part-time in a work store. On the other hand, Reina which has become a sexual excitement state without "Meikoku". "Meikoku" has began to erode in the real world, even Maya who was the childhood friend of Asama is made pleasure addiction...