Kamen Rider W (2009)

This clinches it!

Cast

Renn Kiriyama, Masaki Suda, Hikaru Yamamoto, Koji Kikkawa, Minehiro Kinomoto

Overview

In the windy city of Fuuto, detective Shotaro Hidari and his partner, the mysterious Philip combine to become the two-in-one Kamen Rider, W in order to fight creatures called "Dopants" that abuse the power of items called Gaia Memories.