Yuki Sato is going to reprise as Arata Kagami / Kamen Rider Gatack in Kamen Rider Zi-O Episode 37 & 38. It is confirmed that he is going to transform into Kamen Rider Gatack. He tells Sougo Tokiwa about the Hell Brothers.
When Geiz Revive first appeared in the show, it was revealed that the continuous use of it causes damage to Geiz like blood coming out from his nose or from eyes. Everyone thought that this subject of damage will be carried on in the TV Series until the episode till Geiz raises the Death Flag. But it seems it wasn't true.
Toei had registered the trademark for their next Kamen Rider → Kamen Rider Zero-One. The name is based on the New Era "Reiwa". Reiwa's Rei sounds similar to the word Zero "Rei" (零). Reiwa's Wa is made as "One" (Wan). I wonder the second will be called Zero-Two.
Makai Knight Raiga Saejima (Golden Knight Garo). As the Protector, Raiga hunts down Horror under the orders. Mayuri who wants to be helpful, grows flower at Raiga's place. Both of them were spending their days peacefully.