18+ Hagure Yuusha no Isekai Bible

Suzuki is an unpopular erotic manga artist whose latest series had just gotten axed. Depressed, he prayed at a shrine for a chance for people to appreciate his work, and he was suddenly sent to a fantastical kingdom. When the king saw Suzuki's books, he was so impressed that he hired Suzuki to be the royal mangaka, and hailed Suzuki as the savior of the kingdom…!?

(Source: Akita Shoten, translated)