After what may be…Ryo Ashihara’s untimely passing, YOU had mysteriously metamorphed into a larval form of Agito known as “Gills”, a "flawed," biological version of said Agito himself.

Five months after you had metamorphed into Kamen Rider Gills, you had gotten word about the entire world now having people awaken to supernatural powers. With this in mind, you became dead set on whoever started this whole mess and defeat them at any cost, unaware that the threat in hand has Agito’s power…while also having the same form as you: Gills, leading to this threat being a version of Kamen Rider Gills known as “Gill Agito”, since Shoichi Tsugami lost the Seed of Agito.

Oh…and you used to be a…member of the Tokyo Metropolitan Police Department. So…uh, yeah. Not only are you a Kamen Rider who mainly fights with instincts, you’re also a Kamen Rider who also fights with wits, meaning you got both brain and brawn at your side as the second Kamen Rider Gills (the threat you’re facing is TECHNICALLY the third Kamen Rider Gills)~.