Five months after a young girl named Shiori Oumi had metamorphed into Kamen Rider Gills, a "flawed," biological version of Agito, as she was attending high school, you had figured out that the Lords are hunting her down for her incomplete power after she disappeared from school. This made you dead set on helping her return to a heroic life and teach her how to control her powers, since YOU are Kamen Rider Agito, an evolution of humankind brought on by the possession of the power of Agito.

Outside what seemed to be Shiori’s house, you had walked inside the place as you had a year old letter from Hinako Yaotose in your left hand, looking for the teenage girl as you call out her name…