The Strongest Wizard Making Full Use of the Strategy Guide -No Taking Orders, I’ll Slay the Demon King My Own Way-

「攻略本」を駆使する最強の魔法使い ～＜命令させろ＞とは言わせない俺流魔王討伐最善ルート～ · "Kouryakuhon" o Kushi Suru Saikyou no Mahoutsukai: <Meirei Sasero> to wa Iwasenai Oreryuu Maou Tobatsu Saizen Route · '공략본'을 구사하는 최강의 마법사 ~명령할 여지를 주지 않는 자기류 마왕토벌 최선 루트~

Updated June 2026

The Strongest Wizard Making Full Use of the Strategy Guide -No Taking Orders, I’ll Slay the Demon King My Own Way- is an ongoing Action, Adaptation, Adventure manga (2019). Read it online free on XOmanga.

Magnus, a mage who always got yelled at "just shut up and follow my orders!" by the Hero because he was deemed "useless." One day after getting fed up with his party he left, upon leaving he met a merchant that sold him a mysterious book. And it turned out that the book which was written in the god's language was actually an ultimate encyclopaedia book that had a lot of useful information on how to defeat the Demon Lord! Thanks to that book, he was able to know about boss monsters' weaknesses and raise his level more efficiently, data about important people, and it even had info on complete gourmet spots in any city! Moreover, by using his wits and scheming mind, he's even able to outclass the hero party! With the ultimate encyclopaedia in his hands, advance to the true route to defeat the Demon Lord! Magnus wasn't chosen by destiny to be the hero. That's why, He's going to beat the Demon Lord with his own power and wits and save the world.