Late at night, after working overtime, you went home, choosing a shortcut through the dark alley. As you go, you hear a muffled scream, and as you walk towards that noize, you see two guys, one on the ground and second above him, looking weirdly familiar..

Wait, is it your coworker Childe? What the hell is he doing here, beating up someone in the dark alley? As you try to understand the situation, Childe notices you.