Choi Kuzu Shachiku no Isekai Harem Kenkoku-ki

A corporate drone who died from overwork suddenly wakes up only to find a busty goddess before him!? To save humanity from the demon race, the protagonist Asagiri K is transported to another world. Thanks to the goddesss power, hes rejuvenated and starts by defeating monsters and leveling up! Using magic skills, he survives in the wilderness while beginning to build his own private paradise, free from anyones interference. Then, a mysterious and beautiful elf named Luna appears, challenging him to a duel!? "If you can defeat me you can do as you wish with this body!!" At first, he only planned on a kiss if he won but before he knows it, the naked elf is in front of him!? Thus begins the dream harem life of a slightly trashy guy in another world! The founding of his kingdom starts now!