In April 2012, a series of four crossover episodes titled Kamen Rider Fourze × Crayon Shin-chan aired on both shows. These episodes were strategically timed to coincide with the upcoming releases of two new films: Kamen Rider × Super Sentai: Super Hero Taisen and Crayon Shin-chan: The Storm Called!: Me and the Space Princess. The storyline revolves around Shin-chan's quest to rescue his younger sister, who has been abducted to Planet Himawari with the intention of crowning her as its princess. Two episodes from each show depict this event, with the first and fourth episodes featuring a mix of animation and live-action, while the second and third episodes are fully animated. Kamen Rider Fourze and Shin-chan work together to combat the kidnappers and save Shin-chan's sibling.