TV-Series
Description
Ryū Terui's background originates from a traumatic event where the Weather Dopant killed his family—parents and younger sister. His father's final warning about the "Man with the W Memory" fueled his quest for vengeance. This path led him to collaborate with the enigmatic Shroud, who provided him with the Engineblade and later the Acceldriver, enabling his transformation into Kamen Rider Accel.
As Superintendent of the Futo Police Department's Paranormal Crime Division, Terui initially viewed Fuuto City solely as a hub of criminal activity, driven by his hatred for Gaia Memories due to their role in his family's tragedy. He surveilled the Narumi Detective Agency early in his investigation of Dopant-related crimes. His first major case involved mistakenly targeting the Iceage Dopant as his family's killer, nearly harming an innocent person. This error, alongside clashes with Shotaro Hidari, marked his early abrasive and justice-driven approach.
Terui's character evolved significantly after confronting and defeating the Weather Dopant, Dr. Shinkuro Isaka—the true killer of his family—using the Trial Memory obtained from Shroud, destroying the Weather Memory. This victory allowed him to process his rage and shift from vengeance to protection. He learned Shroud had supplied Isaka with the Weather Memory, though she had not anticipated the harm to his family. Terui also discovered his unique physiology granted resistance to certain Gaia Memories' effects, such as the Terror Dopant's field. Despite Shroud's attempts to manipulate him into replacing Shotaro as Double's user, Terui rejected her methods, affirming his commitment to fighting with compassion.
His relationship with Akiko Narumi became central to his development. After promising to watch the Futo fireworks with her during *Kamen Rider W Forever*, they fell in love and married. In *Kamen Rider Accel* (part of *Kamen Rider W Returns*), Terui navigated his duties as a Kamen Rider alongside married life. When Akiko expressed concerns about the dangers of his role, he affirmed his commitment to protecting her. The film also depicted him defending a young thief, Aoi Katsuragi, from a corrupt police officer turned Commander Dopant, using a Gaia Memory Enhancing Adapter to upgrade his Accel powers.
In later crossovers and spin-offs, Terui maintained his protector role. *Kamen Rider Drive Saga: Kamen Rider Chaser* showed him assisting Shinnosuke Tomari and Go Shijima in capturing a robber linked to Gaia Memories, revealing he and Akiko had a daughter named Haruna. During *Kamen Rider Zi-O NEXT TIME: Geiz, Majesty*, he mentored Geiz Myokoin on the purpose of being a police officer, emphasizing protection over revenge and participating in a battle against Kasshine robots. He also joined the All Rider Break attack in *OOO, Den-O, All Riders: Let's Go Kamen Riders*.
In *Fuuto PI*, set after the fall of the Museum organization, Terui supported the Narumi Detective Agency as a police ally and Kamen Rider Accel. He provided intel on residual Dopant activities and intervened in battles when necessary, such as arresting remnants of the EXE group. His integration into the city's protective network—alongside his family life with Akiko—underscored his complete transition from a vengeance-driven outsider to a dedicated guardian of Fuuto.
As Superintendent of the Futo Police Department's Paranormal Crime Division, Terui initially viewed Fuuto City solely as a hub of criminal activity, driven by his hatred for Gaia Memories due to their role in his family's tragedy. He surveilled the Narumi Detective Agency early in his investigation of Dopant-related crimes. His first major case involved mistakenly targeting the Iceage Dopant as his family's killer, nearly harming an innocent person. This error, alongside clashes with Shotaro Hidari, marked his early abrasive and justice-driven approach.
Terui's character evolved significantly after confronting and defeating the Weather Dopant, Dr. Shinkuro Isaka—the true killer of his family—using the Trial Memory obtained from Shroud, destroying the Weather Memory. This victory allowed him to process his rage and shift from vengeance to protection. He learned Shroud had supplied Isaka with the Weather Memory, though she had not anticipated the harm to his family. Terui also discovered his unique physiology granted resistance to certain Gaia Memories' effects, such as the Terror Dopant's field. Despite Shroud's attempts to manipulate him into replacing Shotaro as Double's user, Terui rejected her methods, affirming his commitment to fighting with compassion.
His relationship with Akiko Narumi became central to his development. After promising to watch the Futo fireworks with her during *Kamen Rider W Forever*, they fell in love and married. In *Kamen Rider Accel* (part of *Kamen Rider W Returns*), Terui navigated his duties as a Kamen Rider alongside married life. When Akiko expressed concerns about the dangers of his role, he affirmed his commitment to protecting her. The film also depicted him defending a young thief, Aoi Katsuragi, from a corrupt police officer turned Commander Dopant, using a Gaia Memory Enhancing Adapter to upgrade his Accel powers.
In later crossovers and spin-offs, Terui maintained his protector role. *Kamen Rider Drive Saga: Kamen Rider Chaser* showed him assisting Shinnosuke Tomari and Go Shijima in capturing a robber linked to Gaia Memories, revealing he and Akiko had a daughter named Haruna. During *Kamen Rider Zi-O NEXT TIME: Geiz, Majesty*, he mentored Geiz Myokoin on the purpose of being a police officer, emphasizing protection over revenge and participating in a battle against Kasshine robots. He also joined the All Rider Break attack in *OOO, Den-O, All Riders: Let's Go Kamen Riders*.
In *Fuuto PI*, set after the fall of the Museum organization, Terui supported the Narumi Detective Agency as a police ally and Kamen Rider Accel. He provided intel on residual Dopant activities and intervened in battles when necessary, such as arresting remnants of the EXE group. His integration into the city's protective network—alongside his family life with Akiko—underscored his complete transition from a vengeance-driven outsider to a dedicated guardian of Fuuto.