No. 5

No. 5 (ナンバーファイブ, Nanbā Faibu) is a seinen manga created by Taiyo Matsumoto. Originally serialized in Shogakukan's Ikki manga magazine. It ran for eight volumes.

Plot
A science-fiction thriller set in a powerfully imagined multicultural future landscape that resembles the current Middle East. No.5 battles against the forces of the Rainbow Council. 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.