In Another World with My Smartphone, Vol. 12 (manga) — Patora Fuyuhara

With Sue entering the mix, Touya's ever-expanding cadre of brides shows no signs of stopping! But he's not the only one with marriage on his mind, as the much-maligned prince of the Lihnea Kingdom has begun to set his sights on a bride himself... Meanwhile, as the search for more Babylon facilities bears fruit, what hidden secrets does Touya's latest find have in store for him?