Shuumatsu no Harem, Episode 4

The Man-Killer Virus has wiped out 99.9% of the world’s male population. What remains are five billion women and the last five men who are resistant to the virus. One of them is Reito Mizuhara, who was put into cryostasis five years earlier due to a protracted illness and now becomes one of humanity’s last hopes after his awakening: He and the other four men are ordered to mate with the women to ensure the continuation of humanity. Reito, however, has other plans: He is searching for his only love, Elisa, who disappeared without a trace three years earlier. Can he find her or will he succumb to the temptation of the other women? Shuumatsu no Harem, World's End Harem, 終末のハーレム, 종말의 하렘, Гарем конца света, 終末的後宮, 终末的后宫