『Fuuto Tantei』, which started serialising in Weekly Big Comic Spirits since v36.37, is a sequel to 『Kamen Rider W』 starring Kiriyama Ren as Hidari Shotaro and Suda Masaki as Philip. 2017 marks the 8th anniversary of the series, as well as Suda’s 8th debut anniversary as an actor. For v44’s cover, they reenacted the same pre-transformation pose =D
source: good samaritans
You can also watch the making [here]!
If you are interested to read the sequel (rated mature), here are the manga chapters released so far: