I'm Quitting Heroing

I'm Quitting Heroing: Next Gig Is at the Demon Queen's Castle is a Japanese fantasy light novel series written by Quantum and illustrated by Hana Amano. It was serialized online from January to February 2017 on Kadokawa's user-generated novel publishing website Kakuyomu. It was later published by Fujimi Shobo with three volumes from December 2017 to October 2018 under their Kadokawa Books imprint. A manga adaptation with art by Nori Kazato has been serialized online via Kadokawa Shoten's Young Ace Up website since May 2018 and has been collected in eight tankōbon volumes. Both the light novel and manga are licensed in North America by Kadokawa, with Yen Press handling the manga's physical release. An anime television series adaptation produced by EMT Squared aired from April to June 2022.

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Plot

In a medieval yet futuristic time, the Demon Queen Echidna and her forces have come from a polluted wasteland called Demon World. The world's strongest hero, Leo Demonheart, has defeated Echidna and her Elite Four. Sometime later, Leo shows up wanting to help Echidna rebuild her army because the human populace became fearful of him instead of celebrating his victory, as some people worried that he would become the next demon king. As a result of his exile, Leo wants to help Echidna, but she violently rejects his offer. The Elite Four go behind her back by having Leo help rebuild Echidna's army anyway. He also learns that Echidna wants to obtain the Philosopher's Stone so that she can make the Demon World fertile again.
Leo's flashbacks reveal that the story is in the 51st century; technology and knowledge were lost due to the previous Demon Lord invading Earth in the 21st century and causing World War III. With the loss of machinery, humans adapted to the magic of demons. He himself was one of the experiments and has been programmed to be a hero, but after countless victories and being unable to die or lose, he desires to be free of his painful life.

Characters

;Leo Demonheart
;Echidna
;Shutina
;Lili
;Mernes
;Edvard
;Dianette
;Jerietta

Media

Light novels

The series is written by Quantum and illustrated by Hana Amano. Originally serialized online on Kakuyomu from January 12 to February 7, 2017, Fujimi Shobo published the series in three printed volumes under their Kadokawa Books imprint from December 10, 2017, to October 10, 2018. The three volumes were later reprinted by the Fujimi Fantasia Bunko imprint from February 19 to April 20, 2022. An English digital release is being published by Kadokawa on its BookWalker website.

Manga

A manga adaptation with art by Nori Kazato began serialization on Kadokawa Shoten's Young Ace Up website on May 31, 2018. It ended serialization on June 2, 2023. Eight tankōbon volumes have been released as of July 2023. The manga is published in English digitally by Kadokawa on its BookWalker website, and in print by Yen Press.

Anime

An anime television series adaptation was announced on October 20, 2021. The series is animated by EMT Squared and directed by Hisashi Ishii, with Yuu Nobuta serving as chief director, Shigeru Murakoshi overseeing the series' scripts, Yuki Nakano designing the characters, and Kōhei Munemoto composing the music. It aired from April 5 to June 21, 2022, on AT-X, Tokyo MX, BS11, and MBS. The opening theme song is "Broken Identity" by Minori Suzuki, while the ending theme song is "Growing" by Nao Tōyama. Sentai Filmworks has licensed the series outside of Asia. Medialink has licensed the series in Southeast Asia, South Asia, and Oceania minus Australia and New Zealand. A two-part original video animation was released with the series' Blu-ray/DVD volumes on June 24 and August 24, 2022.