Kaguya, who is reunited with Houtaro, comes to Furasu High School and charms the students with his "gorgeousness." Houtaro is taken aback by the notoriety that even a fan club has been formed.

Houtaro and Kaguya are again faced with the appearance of the Hundred's Kasshine army. Houtaro and the others transform into Riders and defeat them, but Kaguya utters ominous words about the leaders still being nearby...?!