Chained SoldierChained Soldier.

Chained Soldier, known in Japan as Mato Seihei no Slave (Japanese: 魔都精兵のスレイブ, Hepburn: Mato Seihei no Sureibu; lit. 'Slave of the Magic Capital's Elite Troops'), is a Japanese web manga series written by Takahiro and illustrated by Yohei Takemura. It has been serialized on Shueisha's Shōnen Jump+ online platform since January 2019. The series is set in a near-future Japan where portals to a dangerous dimension, called Mato, have appeared across the country.