Toume launched the original manga in Kodansha’s Morning magazine, where it ran from 1997-2001, after which it went on hiatus until the launch of Kurogane Kai.
Toume launched Kurogane Kai in Grand Jump in February 2017.
This year’s sixth issue of Shueisha’s Grand Jump magazine revealed on Wednesday that Kei Toume’s Kurogane Kai manga will go on hiatus, and will return in the magazine’s 12th issue on May 20.
Kodansha published five compiled book volumes for the manga.