Gyakuten Isekai no Kyuuseishu: Isekai Trip Shita Saki de Bijo ni Kanshasare, Icha Love Seikatsu Okuttemasu

Tomoaki Yushima, an ordinary college student who took a trip to another world. This world was reversed on appearances, chastity, and lust. With beauties having no place to go, they gathered to create a town―Blossom. Due to being proved to be their town mayor, will Tomoaki lead an erotic life?!

(Source: Joeglen's Otherworld Translations)