18+ Isekai ni Tensei shitara Zenra ni Sareta

When an ordinary Japanese man is catapulted headfirst into a fantasy world, he’s especially disappointed that he was sent stark naked! Adapting to life in a land of monsters and magic is hard enough without having to do it in your birthday suit, but Yoshida Shuta is going to grin and bear it—or bare it—as best he can.

(Source: Seven Seas Entertainment)