The Great Jahy Will Not Be Defeated!

 is a Japanese comedy manga series written and illustrated by Wakame Konbu. It has been serialized in Square Enix's "shōnen" manga magazine "Monthly Gangan Joker" since August 2017, and its chapters have been collected into six "tankōbon" volumes. In North America, the manga is licensed for English release by Square Enix Manga & Books. An anime television series adaptation by Silver Link is scheduled to air on August 1, 2021 on ABC and TV Asahi's ANiMAZiNG!!! programming block.
Plot.
Jahy, the feared and respected number-two ruler of the Demon Realm, suddenly finds herself powerless and shrunken in the human world after a magical girl destroys a powerful mana crystal, which also destroys her home realm. The manga follows Jahy and her daily life as she learns to live in her new surroundings while she works to restore her original form, the power crystal, and the Demon Realm.
Media.
Manga.
Originally starting as a one-shot in March 2017, Square Enix has serialized "The Great Jahy Will Not Be Defeated!" in its monthly "shōnen" magazine, "Gangan Joker", since August of the same year. As of April 22, 2020, six "tankōbon" volumes have been published, starting with the first volume released on February 22, 2018. In North America, the manga will be published by the Manga & Books division of Square Enix. The first volume was originally scheduled to release in September 2020, but had to be delayed due to the COVID-19 pandemic. The release date was changed to July 20, 2021.
Anime.
An anime television series adaptation was announced on April 16, 2021. The two-cour series is animated by Silver Link and directed by Mirai Minato, with Michiko Yokote overseeing series scripts, Saori Nakashiki designing characters and serving as chief animation director, and Kōji Fujimoto and Osamu Sasaki composing the music. It will premiere on August 1, 2021 on ABC and TV Asahi's ANiMAZiNG!!! programming block. Yui Ogura will perform the series' first opening theme song "Fightin★Pose".