Kamen Rider Den-O is a Japanese tokusatsu television series that aired in 2007. It is the seventeenth installment in the long-running Kamen Rider series. The story follows Ryotaro Nogami, a young man with incredibly bad luck, who becomes the titular Kamen Rider Den-O. With the help of time-traveling creatures called Imagin, Ryotaro battles to protect the flow of time from those who would use it for evil purposes. The series is known for its comedic elements and engaging storyline.