Synopsis: Seishokuki

Despite being a diligent student and a responsible class representative, Nogawa Izumi struggles with an insatiable sexual desire. To satisfy her urges, she feigns illness during classes and retreats to the nurse's office for self-pleasure. However, when the Earth faces an alien invasion where the invaders take on the appearance of animals, Izumi's heightened libido may prove to be an asset in defending the planet. During an attack by the extraterrestrials, Izumi is rescued by Usayama, a bunny alien whose species has suffered at the hands of the enemy. Usayama presents her with a revealing swimsuit that grants her formidable powers to combat the aliens; yet, it also induces uncontrollable arousal. The scientific organization that Usayama is linked with believe that Izumi's unusual sexual drive could be the pivotal weapon they need to fight off the invaders. Can Izumi rise to the challenge and save her world from the extraterrestrial threat?