The Strongest Magician in the Demon Lord's Army Was a Human

is a Japanese light novel written by Ryousuke Hata and illustrated by Kuma. It began serialization online in February 2016 on the user-generated novel publishing website Shōsetsuka ni Narō. It was later acquired by Futabasha, who have published five volumes from September 2016 to April 2018 under their Monster Bunko imprint. A manga adaptation with art by Anajiro was serialized online via Futabasha's Gaugau Monster website from July 2019 to June 2025 and was collected in thirteen volumes. An anime television series adaptation produced by Studio A-Cat aired from July to September 2024.

Premise

Ike is one the most powerful generals in the Demon Lord's army, along with their most creative thinker. The secret to his success is that Ike is actually human; getting better result by having humans and demons live together, instead of using oppression. Making his territory the most prosperous of the conquered lands. With demons jealous of his success and bigoted humans out for his head, Ike has his hands full trying to keep his territory from falling into the wrong hands.

In the background, demons and humans with their own agenda attempted to use Ike as a pawn in their plans.

Characters

The adopted grandson of Romberg, he hides his true human self with a hood and mask. He was originally Japanese, but is reincarnated as a human in another world with memories of being Japanese in his past life. At this time, he was raised by a demon named Ron Berg and came to follow him as his grandfather. He is renowned for his incredible magical powers, often taking humans by surprise by being able to use healing magic; demons find compassion a foreign concept and have little understanding of its attribute.

Satie is Ike's human maid from the town he conquered at the start of the story. She accidentally hid in the office Ike was taking a break in and saw his real face. Ike employed her, since she would not attempt poisoning a fellow human; giving her a safe and secure position. She develops feelings for Ike, which Satie cannot understand at first.

Cefiro is a sorceress employed in the Demon army; she knows Ike is human and works to keep his identity secret. Cefiro isn't above shameless fanservice just to upset Ike.

The Demon Lord, Dairokuten is seeking mostly non-aggressive tactics in the war. She was previously Oda Nobunaga in her past life, making her a brilliant tactician and very observant; realizing Ike is human and entrusting coexistence between humans and Demons to him.

Lilith virgin succubus enamored with Ike who is unaware of his human identity. She views Satie as her rival for master's affection, but Ike has stated he has no romantic interest in Lilith.

Jiron is female knight whom Ike defeated during his victory. She was going to be executed under false charges by the nobles, but Ike encouraged her to choose life.

Romberg was the Demon who adopted Ike. He taught Ike chantless magic and helped design her disguise. Romberg has passed away by the present, but Cefiro was entrusted by Romberg to look after Ike.

Media

Light novel

Written by Ryousuke Hata, The Strongest Magician in the Demon Lord's Army Was a Human began serialization online on the user-generated novel publishing website Shōsetsuka ni Narō on February 22, 2016. It was later acquired by Futabasha who published five volumes with illustrations by Kuma from September 30, 2016, to April 27, 2018, under their Monster Bunko light novel imprint.

Manga

A manga adaptation illustrated by Anajiro was serialized on Futabasha's Gaugau Monster manga website from July 12, 2019, to June 8, 2025. The manga's chapters were collected in thirteen volumes released from September 30, 2019, to June 13, 2025.

Anime

An anime television series adaptation was announced in January 2024. It was produced by Studio A-Cat and directed by Norihiko Nagahama, with Touko Machida writing series scripts, Masami Sueoka designing the characters, and Kohta Yamamoto composing the music. The series aired from July 3 to September 18, 2024, on Tokyo MX and BS Asahi. All theme songs are performed by Kohta Yamamoto, with the opening theme song "Ctrl C" featuring Shun Ikegai, and the ending theme song "I Still" featuring Maya Akechi. Crunchyroll streamed the series. Medialink licensed the series in Southeast Asia and Oceania (except Australia and New Zealand) for streaming on Ani-One Asia's YouTube channel.

Episodes

Notes

References

External links

• at Shōsetsuka ni Narō