18+ Isekai Teni shita Ore wa, H no Tabi ni Gacha wo Hiku! Motte Kure, Ore no Seiryoku!

Ken, who was transported to another world after starting a game on a whim after work one night, is suddenly ordered by a goddess to prevent the appearance of the Demon King. He is given a cheat skill: "You can pull a gacha every time you have sex." Can he use this mysterious power to save the world?! An otherworldly tale full of worldly desires begins!!

(Source: Kodansha, translated)