is a Japanese tokusatsu drama and the 22nd entry in the Kamen Rider series written by Kazuki Nakashima. Transfer student Gentaro Kisaragi transforms into the titular hero Kamen Rider Fourze to battle the constellation-themed monsters called Zodiarts. Series' producer Hideaki Tsukuda initially planned on including various past Kamen Riders in the series to commemorate Kamen Riders 40th anniversary. However, due to past series Kamen Rider Decade celebrating the 10th anniversary of the Heisei Kamen Riders, Kamen Rider Fourze appreciates the previous Kamen Riders' history and treats them as urban legends in-universe. The primary setting of the series is the fictional , abbreviated as , which the main characters attend. Additionally, the monstrous Horoscopes seek to transform Amanogawa High's students and faculty into more of their kind to expand their ranks. Main characters Kamen Rider Club The is a club that Gentaro Kisaragi forms to gain new friends at AGHS, using past Kamen Riders as inspiration. After Gentaro becomes Kamen Rider Fourze, the club's members assist him in his battles against the Zodiarts and investigate the urban legends that surround the past Kamen Riders' existence. The club's headquarters is the remains of the lunar base, which is accessed by a powered portal found in a locker in an abandoned section of the AGHS campus and was originally owned by the , abbreviated as , which developed Fourze's technology and the Zodiarts Switches. After losing the Rabbit Hatch to the Zodiarts in the series finale, the Kamen Rider Club is reworked to become the Earth-based . Gentaro Kisaragi is a second-year, later third-year, student at AGHS with a reckless, bad-boy image due to his delinquent yankee fashion sense coupled with a sociable attitude and a desire to befriend everyone he comes across. Throughout his time at AGHS, he goes on to become Kamen Rider Fourze and form the Kamen Rider Club. Five years later, as of the events of the crossover film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Kisaragi has become an AGHS teacher and the Kamen Rider Club's new academic advisor before sacrificing his Rider powers to help his student, Saburo Kazeta defeat Kageto Banba. The Fourze System consists of a spacesuit, the belt, and 40 , all of which harness Cosmic Energy and were reverse-engineered from the Presenters' Core Switch by Rokuro Utahoshi, who was inspired by the Four Symbols and a hypothetical friendship-based system