Sekai ni Otoko wa Jibun dake, Zensekai no Josei wo Ninshin Sasete Jinrui wo Sukue! Semen Caravan Nintei Soft

Synopsis

I had a bad cold.. When I woke up, a nurse says to me, "You've been asleep for one year." "What!?" The nurse explains to me that all men except me have died because of some evil virus.... My semen is one and only hope for the continuation of human life now. (Source: ErogeShop)