The cast members of Kamen Rider W Season 2 Fuuto Tantei is

Kamen Rider W Sequel Anime Fuuto PI Unveils Staff Members - News - Anime News Network

I did a quick calculation of how many chapter the fuuto tantei anime might cover (if 13 episode, until chapter 27, end of vol2) (if 26 episode, until chapter 46,end of vol4)

My Shiny Toy Robots: Anime REVIEW: Fuuto PI

AmiAmi [Character & Hobby Shop] Fuuto Tantei Crystal Magnet Kamen Rider Double(Released)

Fuuto PI Kamen Rider W / Fuuto Tantei Plush Philip

Fuuto Tantei (Volume) - Comic Vine

My Shiny Toy Robots: Anime REVIEW: Fuuto PI

Kamen Rider W: Fuuto Pi 2nd Trailer Released! - Tokunation

Shoutarou and Akiko┊xdrann Kamen rider w, Rider, Kamen rider

Kamen Rider W) Fuuto PI/Fuuto Tantei Chapter 127 : r/KamenRider