"The Perpetual Lolita Realm: Summoned to Polygamy and Salvation"

Prompt: A big breast loving otaku dies on the way home from work and wakes up in a fantasy world summoned by loli queen who’s full grown despite her appearance. He needs to defeat the demon lord. He learns he’s in a world where all the women are loli’s staying eternally youthful. But the men still grow old and die. So polygamy is required having less than five wives is heavily frowned upon and may incur fines if you’re found not contributing to society.