Namaiki Kissuisou e Youkoso – Episode 1
なまイキ ~生粋荘へようこそ The Animation
Satoshi Ashifuji is a university student who somehow ends up in the dormitory Kissuisou. Its residents are all women with big problems! Furthermore, he meets a Goddess who claims terrible things are going to happen unless he injects his semen into all of the residents at Kissuisou! Well, better get to work then!