Streaming: Crunchyroll
Episodes: 11
Source: Manga
Episode Summary: Five years ago, Reito went into cryogenic sleep in order to wait out a cure for Cellular Sclerosis, a currently incurable disease. This occurs, inconveniently, just as he confesses his feelings to his childhood friend and fellow researcher, Erisa. He leaves a token with Erisa so that they can reconnect after he’s awoken from stasis, but as he slumbers the world transforms into an inhospitable and broken place.
After the MK (“Male Killer”) virus quickly obliterates the male population of Earth, society begins to crumble and deteriorate. For reasons that are still being studied, Reito’s Cellular Sclerosis treatment makes him immune to the ravages of the MK virus, and as one of 5 known men in his same position, the potential for his offspring to carry that immunity makes his sperm cells a precious commodity. In order for the Human Race to survive, Reito must help repopulate it. But the only woman that’s on Reito’s mind is his childhood friend, Erisa. Thus, he’s given an ultimatum – he can try to find Erisa, but in the meantime he’ll be faced with many other women who are passionately focused on obtaining Reito’s seed.