18+ Isekai Magic Mirror-gou

The legendary Magic Mirror van is off to another world! Maho Itou, an assistant director, was driving the Magic Mirror van to the next location when he fell asleep at the wheel and was transported to another world. It's a world where a certain organization is operating behind the scenes to eradicate sex from the world. In order to reclaim the joy of sex, Maho needs to to bring this other world's people to the Magic Mirror van and have sex with them. With a large-breasted princess and perverted nun as his companions, his sexual journey begins.

(Source: Futabasha, translated)