After saving the world, the strongest hero, Leo, has nowhere else to go. His overly strong power is something that a peaceful world doesn't need. The place where he ends up working is his former enemy, the Demon Queen's Army! This is the light novel version of the Japanese major online novel prize winning work!

After saving the world, the strongest hero, Leo, has nowhere else to go. His overly strong power is something that a peaceful world doesn't need. The place where he ends up working is his former enemy, the Demon Queen's Army! This is the light novel version of the Japanese major online novel prize winning work!

After saving the world, the strongest hero, Leo, has nowhere else to go. His overly strong power is something that a peaceful world doesn't need. The place where he ends up working is his former enemy, the Demon Queen's Army! This is the light novel version of the Japanese major online novel prize winning work!

After saving the world, the strongest hero, Leo, has nowhere else to go. His overly strong power is something that a peaceful world doesn't need. The place where he ends up working is his former enemy, the Demon Queen's Army! This is the light novel version of the Japanese major online novel prize winning work!

Hiding his identity as the Hero, Leo Demonhart has managed to sneak his way into Demon Queen Echidna’s forces...but he has his work cut out for him. When faced with an assassin who struggles to communicate and a warrior who doesn’t understand how to educate others, Leo knows the best solution is for them to take a page out of his long, long book. After all, he’s got a whole lot of experience under his belt, and his history stretches back further than anyone could have ever guessed...

Leo has defended humanity for three thousand years as the world's strongest hero, but the humans have finally renounced him, and he’s quit his job for good. Now free of his past burdens, Leo plans to hand the philosopher’s stone over to the Demon Queen as a show of good faith—but little does he know it will be the cause of a terrible conflict...

I’ve got a bit of a confession to make—I’ve been in the world of BB for a few months now, and I still haven’t found the true protagonist. There isn’t a ton of time to lose either, not when we only have three years to prepare to defeat Rasulfi and save the world. Don’t worry though, I’ve got a plan: I’m gonna train Radd and his party of rookies up so they can take care of it all for me! Step one was to have them subjugate their first dungeon, but now it’s time for them to conquer something bigger—Freelea’s coliseum. With the tournament for the title of strongest fighter only a month away, I’ll have to use my game knowledge to the fullest to prepare them for battle! I’ll take advantage of my Analyze skill to check out people’s stats, use items to seize the upper hand against enemies, and even utilize dungeon traps to create the perfect conditions for grinding! But even so, will I really be able to make the kids strong enough to defeat Nirva, the current champion of the coliseum?

Imagine being born with the memories of a life you haven’t lived yet, a life of crime fighting and adventuring, only to find out that no one believes you and, honestly, couldn’t care less. This is the story of Black Terror’s trusted sidekick…TIM! (It’s just Tim.)

The Hero Is Employed by the Demon Queen...and He Still Has to Conquer a Dungeon?!Now that he’s officially joined the Demon Queen’s army, Leo is ready to take on any challenge—except, maybe, a thirty-floor dungeon set up by Shutina’s disciple and Leo’s least-favorite curse-maker, Canaan. But Shutina’s powers of persuasion (?) are hard to beat, and Leo is dragged off to face a collection of tricks and traps that might just be a little too hot to handle! As he descends the floors, though, little does he realize he’s not the only member of the Demon Heart series left in the world, and one of his siblings may be at work behind the scenes...

After saving the world, the strongest hero Leo became someone who is not wanted in the peaceful human world. He was too strong. Exiled, he seeks a job at the Demon King's Army, which he had defeated and needs to be rebuilt. The Army had many problems: too much work, financial troubles, etc. Leo starts to make things better using his power. Leo encounters Echidna again, and asks her why she invaded the human world. There was an unexpected story---! This is the comic version of the Japanese novel which won one of the major online prizes for novels!