The August 2021 issue of Kodansha’s Monthly Shonen Magazine has announced that Ryo Sumiyoshi’s ASHIDAKA -The Iron Hero (Tekkai no Senshi) manga will end in the magazine’s next issue on August 6, 2021.
The story of the manga is described as:
In a world where everyone bears metal arms, a demon bearing a hundred pairs of metal arms threatens total destruction on the world and everyone who lives within it. But even in the face of total hopelessness, a group of warriors is ready to tackle this desperate challenge. A boy named Ashidaka, with two pairs of metal arms of his own, gathers his companions for the sacred war to come…
Sumiyoshi launched ASHIDAKA -The Iron Hero in Monthly Shonen Magazine in January 2020. Kodansha Comics is simultaneously publishing the manga in English.