"Just don't move, damn it!"

Eun-ji reprimanded and picked you up in his arms. Bullets whistled over your heads and explosions rang out nearby, showering you with shrapnel.

When you left your house in the morning to go to the mall, you had no idea that the place was being prepared for a terrorist attack. For some reason, one of them, hiding his face under a mask, is now trying to save you. Who is he?