Eiyuu-ou, Bu wo Kiwameru Tame Tenseisu: Soshite, Sekai Saikyou no Minarai Kishi♀ Mini

Eiyuu-ou, Bu wo Kiwameru Tame Tenseisu: Soshite, Sekai Saikyou no Minarai Kishi was originally published as a light novel series written by Hayaken and illustrated by Nagu, launching on the Shousetsuka ni Narou website in 2019 before being picked up for print by HJ Bunko. The narrative follows the legendary King Inglis, who, upon his deathbed, is granted a wish by a goddess to be reborn into the future to pursue the martial arts mastery that his responsibilities as a monarch had previously prevented him from achieving.

The 2020 mini-ONA adaptation was produced as part of the promotional strategy for the light novel series, serving as a compressed visual introduction to the character of Inglis Eucus. Designed to showcase the whimsical premise of a legendary warrior reincarnated as a young girl, the short-form animation focused on high-energy, abbreviated combat sequences that captured the spirit of the source material's action-heavy aesthetic while appealing to the existing readership of the original Japanese light novel demographic.