Description:

"Maou Army’s strongest magician" I'm called. Ike, a demon capable of capturing a fort alone. Clearing away enemies with immense magic, he is without a doubt a monster awed by friend and foe. However he has a secret he can’t tell other demons. "I, actually I'm human you know." Using modern knowledge to keep his secret, he became treated as a great commander and the driving force of the Maou's army. (Source: MU)

Description:

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. Source: KADOKAWA

Description:

Leo, the strongest hero who has no place to go anywhere after saving the world. Power that is too strong can not enter the peaceful world. A place of employment where he arrived – the former enemy, the Magus army! Source: MU

Description:

Soon after the last Demon King was defeated, the Demon Empire started a contest to choose the next Demon King. But the favourite contestant to win the tournament was no other than a human, The Hero Helck, whose motive to become the Demon King was to defeat his own race. What are Helck's true motives to participate in the contest and defeat the human kingdom? It's up to one of the Four Heavenly Kings of the Empire, Red Vamirio, to discover and unfold Helck's true intentions.

Description:

In the present era, adventurers, demons, heroes, and demon lord, are no longer occupations that put one's lives at stake. With the world at peace, it is an era where conquering dungeons has been transformed into entertainment. Adventurers and monsters are able to fight with a substitute body made of magic, popularizing dungeon conquests with no deaths. In a continent where dungeon conquests are livestreamed, the party I was associated with was supposed to have been the 4th most popular in world. However, as the rules mandated that a party must consist of 5 members at most, I was told that I was hindering them from climbing to 3rd place being that I was a black mage, the least popular job.Having lost my job, I struggled with finding another party until one day a beautiful woman appeared before me telling she had a job for me. Moved by the fact that she valued my abilities more than my former comrades ever did, I ended up taking the interview before hearing what the job entailed. In the deepest part of the dungeon with the highest difficulty, the demon lord's castle, one of the Four Devas was waiting for me. This is the story of the black mage who was expelled from the heroes party as he enters into the demon lord's army and repels the heroes.(Source: MU)