Ryugyoku. It is a world said to have been created by the Dragon God, where various races such as humans, elves, and beastfolk reside. In that world, Octo was an abhorred existence called a 'Mazemono (Mixed-Blood)'.

This is the story of Octo, who, despite being in another world, possesses knowledge from his previous life, and as he strives to live peacefully using that knowledge, he eventually comes to be known as the 'Lazy Sage'.

※ This story chronicles the life of the protagonist, Octo, and concludes in a leisurely manner, implying that life simply continues. Please note that the protagonist is not overwhelmingly strong (though he does solve incidents using modern knowledge), nor is it a story about romantic fulfillment leading to a happy ending.

※ Several side stories have been written for this series. If you plan to read them, we believe the smoothest order is: Lazy Magician → Lazy Sage Short Stories → Dangerous Demon → The Amnesiac Man. Regarding 'The Invincible Diva,' you can read it at any time, so thank you in advance.

※ The childhood arc and student arc have been published as books by Ichijinsha Bunko Iris. Thank you, everyone.