Eto Mifuyu (a man) moves into a women-only share house, and on his first day, he unexpectedly runs into Shimizu Akari, an elf who attends the same university, in the bathroom...? And Shimizu, the most brilliant student since the university's founding, has a certain secret... An erotic and cute harem cohabitation life begins, with elves, werewolves, ogres, and a diverse array of other races!