Isekai Maou to Shoukan Shoujo no Dorei Majutsu Ω

Synopsis

Diablo inadvertently rescues the priestess Lumachina Weselia from assassination by the Paladin Gewalt, easily defeating Gewalt and leaving him frozen in ice. As Lumachina had been praying when Diablo appeared, she now believes Diablo is God, which disturbs him. Lumachina explains to Rem and Shera that only God and her future husband are allowed to see her naked, and since Diablo did unintentionally see her underwear either he must be God, or she must marry him. Backed into a corner, Diablo instead insists his identity is a secret, allowing Lumachina to continue believing he is God and appeasing Rem and Shera's jealousy. Lumachina believes the Head Cardinal of her church wants her dead for investigating his corruption, so she had been looking for Head Paladin Batutta for his assistance. Diablo agrees to escort her to Zircon Tower City, as he remembers that the dungeon he built in Cross Reverie is located there. Lumachina also meets Klem and Edelgard and they instinctively do not get along, so Diablo decides to leave Klem and Edelgard behind, though Klem does upgrade Shera's bow to a demonic ebony bow before they leave, to keep Shera safe.

(Source: Wikipedia)