Scryed Vol 4

Scryed Vol 4 by Yosuke Kuroda. A Sci-Fi manga rated Older Teen, published in English by Tokyopop in 2004.

After a mysterious event, some people in a lawless region gain powers called Alters. Kazuma is a hotheaded Alter user who makes his living as a mercenary, and Ryuho is an elite agent sent to bring rogue users like him under control.