A tribute project titled , consisting of various one-shots written and illustrated by various manga artists, and based on the original manga to promote the then upcoming anime adaptation, began publishing on "Monthly Afternoon" on September 25, 2014. The list of collaborators includes; Akira Hiramoto, Yukari Takinami, Yasushi Nirasawa, Hiroki Endo, Riichi Ueshiba, Ryōji Minagawa, Takatoshi Kumakura, Peach-Pit, Hiro Mashima, Moare Ohta, Takayuki Takeya and Moto Hagio. The stories were collected into a single volume, published by Kodansha on July 22, 2016. In North America, Kodansha USA published the volume on November 21, 2017.