Black is Emma Hilland

On the other hand, Troy and Calvin were also stopped from their attempts to approach the Black leader. Their surprise was far greater than anyone in the building. Not only because they found out that the Black leader was a woman, but because they recognized who it was.

"E-Emma?" Calvin muttered, not believing in his own eyes.

"She..." Troy held his head with both hands, like a baseball spectator watching his favourite team lose.

"H-how come?" Creed muttered.

But when Emma hadn't answered yet, a figure dressed in black with long hair suddenly flew with her knee, directly hitting Creed's head from the side, right on his ear. That person was moving as fast as a flash of shadow.

Emma was even surprised to witness that. "Rachel," she gasped.