Outlaws

Outlaws manga summary:

Two high school students, Lee Sang-Hyun and Bae Ji-Hyun, live their lives as normal high school students, while secretly hiding their true identities: Mages of Law. But on one eventful day, Bae Ji-Hyun reveals her true identity of being a Law Mage in an attempt to rescue Lee Sang-Hyun from a deadly attack from the Corruptors, but to her surprise, Lee Sang-Hyun has a secret to show of his own! Join Lee Sang-Hyun and Bae Ji-Hyun, as they make numerous sacrifices and attempts in order to fight and exterminate the Corruptors that are plaguing the world in which they live in.