The manga serializes concurrently with the In/Spectre manga, which runs in both Kodansha’s Shōnen Magazine R (which switched to digital-only in December 2019) and Monthly Shonen Magazine.
The manga has published two-part chapters every month, and the first part of the 13th chapter also debuted on Tuesday.
The In/Spectre manga inspired a television anime adaptation that premiered on January 11.
Katase launched the manga in Shōnen Magazine R in April 2015.