Fuuto PI is a Japanese manga series written by Riku Sanjo and illustrated by Masaki Sato. It is a manga sequel to the tokusatsu live-action drama Kamen Rider W, which originally aired in 2009 as part of Toei Company's Kamen Rider franchise. It has been serialized in Shogakukan's seinen manga magazine Big Comic Spirits since August 2017, with its chapters collected in 16 tankōbon volumes as of April 2024.

The Kamen Rider Series , also known as Masked Rider Series, is a Japanese superhero media franchise consisting of tokusatsu television programs, films, manga, and anime, created by manga artist Shotaro Ishinomori. Kamen Rider media generally features a motorcycle-riding superhero with an insect motif who fights supervillains, often known as kaijin .