ビッグコミックスピリッツ
"I Am a Hero", written and illustrated by Kengo Hanazawa, was serialized in Shogakukan's "Big Comic Spirits" from April 27, 2009 to February 27, 2017. Shogakukan has compiled the chapters into twenty-two "tankōbon" volumes, released from August 28, 2009 to March 30, 2017.