[vin13ish]

Let’s count

* The protagonist that shares "Taro" in their name (Shotaro and Gentaro). Even Philip point this out in team up movie between Fourze and OOO.

* A deuteragonist (Philip/Kengo) is more important than the protagonist as both of them are connected with the big bad (Ryubee being Philip’s father and Gamou being friend of Kengo’s father)

* Secondary rider (Ryu/Ryusei) that not only shares "Ryu" in their name but start off as anti-heroes with a personal reason of becoming a rider (Ryu’s family was killed by Weather Dopant and Ryusei’s friend was hospitalized from using Zodiarts switch) and is aides by a mysterious masked mentor (Shroud/Tachibana) who turn out to have a connection with the deuteragonist (Shroud being Philip’s mom and Tachibana being friend of Kengo’s father).

* The deuteragonist turn out to be somewhat construct of collectible devices (Philip being an avatar of Gaia’s memories and Kengo being a Core child) and both of them dies in 1 episode before the final episode which they were revived by antagonists (Wakana sacrifices her body to bring Philip back and Gamou uses his power to recreating Core Switch in order to resurrecting Kengo)

* An antagonist (Kirihiko/Sarina) get betrayed by the organization they work for and made their last appearance in the 18th episode of the show.

* Both summer movies have the civilians/students cheering the main rider and they gains a new form in order to defeat the main antagonist (Eternal/Kyodain)

Wow! Did the head writer of Fourze literally copy and paste Double to Fourze and this head writer is the one who wrote Gurren Lagann and Kill la Kill? (BTW, Riku Sanjo wasn’t the head writer of Fourze as Kazuki Nakashima is the head writer of Fourze)