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!”So begins a tale of adventure with an earth-shakingly powerful Demon Lord (or at least someone who acts like one) taking on another world!

    The prince of this small and weak kingdom strives for only one thing: selling out his country and living a quiet life in leisure! Sadly, the greatest obstacle he will ever face is his own genius...! As he achieves ever greater accomplishments, he earns more and more favor with the people of his kingdom...which makes fulfilling his own dreams all the harder!!!