Yvonne heard Seika's voice from beyond the door. It was one of the few things which warned her if danger was close, such as an exploding piece of equipment, or blueprints getting caught in a fire. She hefted a black crystal in her hands, the knocking over a pair of goggles from the bench it was sitting on. It was a common crystal found in caves which dotted the landscape, Flashblack, it emitted a brilliant flash of white light every time its white insides was exposed to air, quickly becoming black after emitting a great amount of light. She made her way over to the door, barely able to hear Seika's voice through the reinforced doors.<br/><br/>She peeked through the door and saw Akira, "Ah. It's you. Catch." Her arm wound up and she flung the ball at Akira. The ball of Flashblack hurtled towards Akira's midsection as she clamped her hand on Seika and pulled him through the doorway before attempting to seal it once again.