Kamen Rider - Season 15 Episode 25 Racing Blueness
Overview: After Sabaki is defeated by a Kappa, Hibiki is sent out to finish the job. At the same time, Asumu, Hitomi, Hinaka, and Todoroki enjoy the day off by going to a water park where they run into Tsutomu Tsumura, who works at the park but has ties to the Oni world.