In Another World With My Smartphone Novel Volume 21 was written by Patora Fuyuhara and illustrated by Eiji Usatsuka.

A Nice Day for a White Wedding

The time has come: Touya's all set to marry his nine blushing brides! The invites are addressed and stamped, the dinner menu has been set, and the entire nation of Brunhild trembles with anticipation. Can he make it through his big day unscathed? Not if his divine retinue has anything to say about it! And as for the honeymoon, bringing his nine spouses through a spatial tear to vacation on Earth sounds like a nice idea. What could possibly go wrong?

The church bells ring, signaling a tale of swords, sorcery, and smiles!