Yuki Miyazawa

When a Karizaki from a parallel Earth arrives and asks for the Riders' help, Daiji, Kagerou, Hiromi and Vice argue which of them is Ikki's secondary rider.

When the Cosmic Invading Grand Racing Crew, Hashiriyan intends to expand their territory with Earth being their next target to take over, five genius mechanics join forces with an alien machine named Bundorio Bunderas to create their own supercars and special equipment to defend the planet as the Bakuage Sentai Boonboomger!

A dream competition that transcends generations, from Showa, Heisei, and Reiwa! In the scorching hot summer of 2024, Kamen Riders who are "all the strongest" will run! Fall?! Compete!!! The strongest vs. the strongest! A one-time legendary match between heroes who have saved the world! This match... is completely unpredictable!!