Hagure Yuusha no Isekai Bible: Isekai de Ecchi Manga Egaitetara, Seishozukai Toshite Agamerareteiru Ken Nitsuite.
はぐれ勇者の異世界バイブル ～異世界でえちえち漫画描いてたら、聖書遣いとして崇められている件について。～
A struggling erotic manga artist named Suzuki is transported to another world, where he uses his manga to help the nation of Daujin recover from an economic crisis. His work is hailed as a "Holy Book," and he is honored as the "Holy Messenger." As his manga gains widespread popularity, a Demon Lord confronts him, seeking his power. Initially frightened, Suzuki learns the Demon Lord wants to create and influence the world through books, not through war. Understanding this, Suzuki considers assisting him.
