Dokyuu Hentai HxEros

Alien beings known as Kiseichuu invade Earth with a plan that does not rely on ordinary destruction: they drain humanity's sexual energy, intending to erase desire until the species can no longer reproduce. In response, the HxEROS devices are developed to convert that same energy into combat power. Retto Enjou joins the fighters after an encounter that gives him a deep hatred of the invaders, placing him beside his childhood friend Kirara Hoshino and several girls with unusually high reserves of H-energy. To save humanity, the team must preserve the very source of power their enemy is determined to extinguish.