Is the self-proclaimed Demon Lord becoming a guardian deity for a follower of the Gods!? After being summoned to another world similar to the game he used to play, Diablo lives a tumultuous life in this new world after he finds himself the unwitting master of Rem the Pantherian and Shera the Elf; and now, even the Demon Lord-turned-young-girl Klem obeys him! One day, Diablo ends up rescuing a holy woman who was being pursued by a Paladin, and she turns out to be the most important person in the Church. Befriending her, Diablo and the others act as her escorts until they reach Zircon Tower deep in the Demon Lord’s territory. After arriving in a new town, more difficulties arise, ultimately culminating in the appearance of a gargantuan monster attacking them!

One day, the supervisor in charge of watching over Earth was taking care of a distortion, when they made a mistake that caused Kaoru Nagase to lose her physical body. Not only that, but reincarnating her into a different, less culturally-advanced world is the only thing they can offer to do for her.Not one to take this turn of events sitting down, Kaoru makes a demand: the power to create potions at any time she pleases, with whatever effect she wants it to have-and it doesn't stop there either. She asks for a magical Item Box, the ability to understand and speak every language, and the same body she had back when she was a fifteen-year-old girl.Using her newfound powers, Kaoru has to try and make a stable life for herself in a whole new world!

The beginning of a tale of adventure with an earth-shakingly powerful Demon Lord (or at least someone who acts like one) taking on another world! In the MMORPG Cross Reverie, Takuma Sakamoto is so powerful that he is lauded as the "Demon Lord" by other players. One day, he is summoned to a world outside his own-- but with the same appearance he had in the game! There, he meets two girls who both proclaim themselves to be his Summoner. They perform an Enslavement Ritual to turn him into their Summon... but that's when Takuma's passive ability "Magic Reflection" activates! Instead, it is the girls who become enslaved! Though Takuma may be the strongest Sorcerer there is, he has no idea how to talk with other people. It is here he makes his choice: to act based on his persona from the game! "Amazing? But of course... I am Diablo, the being known and feared as the Demon Lord!"