In a parallel world where magic thrives, Lucifer finds himself reincarnated with an unconventional power: the "Hentai System." Despite his lack of inherent magical talent, he discovers that this unique system allows him to grow in strength by forming intimate connections with enchanting women. With his newfound abilities, he embarks on a journey to conquer challenges, harness magical prowess, and win the hearts of alluring beauties. As Lucifer navigates this reverse world, his pursuit of power, romance, and adventure intertwines in unexpected and entertaining ways. ( Did you see that synopsis fuck it, do you think if any men are reborn in this type of world he will just sit down no! He will fuck every woman. Don't try to use your imagination, just be kudzu-ma). ( In this world, there will be many different types of living beings, and MC will fuck them all, and this will be kingdom-building.)