ADVENT!
Along with the Kamen Rider Shinobi special, Toei announced a second special: Rider Time Ryuki which would see the return of the Rider Battle Royale along with a few familiar faces in addition to a very surprising one: Kamen Rider Abyss himself will be added to the main timeline. Just like with Shinobi, a series of photos were recently posted online
For those that might be unfamiliar with Kamen Rider Abyss; Abyss wasn’t part of the main series, but rather he was present in an alternate reality Tsukasa traveled too during Kamen Rider Decade’s run.
It is currently unknown what role he’ll play in the special itself, in the meantime be sure to check out the trailer by clicking the link here.