I recently finished Faiz, and i can say it is my favorite series and Takumi is my favorite Rider. It beats out Double for me(this coming from a self-proclaimed Ishinomori fanboy).
Sometimes a comical and calm slice-of-life, sometimes horror, a mystery playing throughout. Its a story of a monster clinging to his humanity, people who try to desperately throw it away, and a passing by Kamen Rider 6 years before Decade did it.
The series implements fantastic cimetography, fore shadowing, and drama.
Be warned this series isn't afraid of killing its cast, which only adds to the suspense(for me anyway)
I must warn you, Faiz's ending isn't on par with the series. Without giving spoilers, one could asume the writers planned on a sequal that didn't happen.
(It turns my stomach on account I LOVED what happened before, if a show like Kiva had that ending i wouldn't mind that much imo)
Oh, and expect poor communication kills. Lots of them.
Yeah, that Kaixa is a real bastard:redface2: