|This article is about a/an spin-off media story in Kamen Rider Agito.|
The Man that has Become a Kamen Rider (仮面ライダーになってしまった男 Kamen Raidā ni natte shimatta Otoko) is the Kamen Rider Gills Edition of S.I.C. Hero Saga, based on Kamen Rider Agito. The first episode was published in Hobby Japan, August 2012. It serves as a story with the character Kamen Rider Gills and Kamen Rider Another Agito Burning Form
- The story is the first S.I.C. Hero Saga that makes a supporting Rider as the novel's protagonist.