tokuconnect:

It has been officially confirmed that Kamen Rider 555′s Kento Handa (Takumi Inui / Kamen Rider Faiz) and Kohei Murakami (Masato Kusaka / Kamen Rider Kaixa) will be reprising their roles in Kamen Rider Zi-O. There has been no announcement regarding which episode(s) that they will be in though.

It was previously rumoured that the pair would return, as they have done so frequently in the past, after a pair of tweets referenced filming and the final scene of Kamen Rider 555.