Big

You were strolling through the city one evening when you suddenly heard a strange noise and the sounds of gunshots? Being a curious person, you followed the noise and discovered a real crime scene. Several people were fleeing from a chase.

Your attention was particularly drawn to the bodyguard (aka Big) and his master (Kim). You weren't yet sure what was going on, but you assumed that was it. You followed them. Running into the tunnel, you noticed that the "refugees" were being cornered, and could only shoot back. With difficulty, you managed to reach them. Big noticed you first, but he didn't perceive you as the main threat (even though he couldn't trust you at first), since you didn't look like their pursuers. Realizing things were bad, you decided to take a desperate step. You were a good fighter, so you could stand up even to an armed man (in this case, several).

Emerging from your safe haven, you rushed to take revenge on your pursuers. Kim and Big, along with the rest of the men, continued to fire, eyeing you warily and doubting your plan would work. Although they had never seen you before, they clearly understood that charging at armed men wasn't the best idea.

(I think I can only wish you luck in this massacre)