A 2023 release date for the anime adaptation of Chained Soldier (Mato Seihei no Slave) has been revealed, as have staff information and character design images for the two leads. 

Goro Kuji (Bungo to Alchemist assistant director) is directing with Junji Nishimura (Vlad Love) as chief director, Hiroyuki Yoshii (Just Because!) as character designer, and Kaoru Nishimura (Dances with the Dragons) as color designer. SevenArcs was previously announced as the animation production company for the anime, while Yuuya Hirose and Akari Kitou were announced as the voice actors behind main characters Yuuki Wakura and Kyouka Uzen.

A behind-the-scenes “report” video was also released

The Shueisha-published Chained Soldier manga by Takahiro and Youhei Takamura began in 2019. It is serialized on Shonen Jump+ and published under the Jump Comics label. The 11th tankoubon volume will be released on September 2.

Yen Press describes the plot as:

Decades ago, gates to an otherworldly and dangerous dimension known as Mato—the “Demon City”—appeared across Japan. Those who partook in the “peaches” growing there gained unique abilities—but only if they’re girls. When down-in-the-dumps high school boy Yuuki Wakura finds himself caught up in a gate, he’s saved by Kyouka Uzen, the beautiful commander of the 7th squad of the Demon Defense Force, who…orders him to become her slave?!

Source: @mabotai_kohobu (1), (2), (3)