Number Five

From Viz:
In a world that has become 70% harsh desert, the Rainbow Council of the International Peace Keeping Forces, a team of super-powered global security guardians, have a growing crisis on their hands. No. 5, one of their own and known within the council as their top marksman, has left his post and gone rogue. It’s up to the other guardians to track him down–but No. 5, with his mysterious companion Matroshka, won’t go down without a fight.