The original comedy manga by Yukiwo centers on Yurine Hanazono, a college student who summons Jashin-chan, a demon from the underworld.
Yukiwo launched the manga in Flex Comix’s web magazine Comic Meteor in April 2012, and Holp Shuppan released the 12th compiled book volume on April 11.
The website did not confirm the reason for the removal but noted a “dangerous” depiction in the chapter.
The attack killed 11-year-old Hanako Kuribayashi and Foreign Ministry official Satoshi Oyama, and injured 17 other people.