Koizumi stands casually, head tilted down and hands in his pockets, in the middle of the hallway - blocking Jack's only path to the exit Lin will soon be escaping from. The room is darker than it should be - vague, impossible shadows splaying from him in all directions. They begin to lengthen, slowly, growing gradually closer to the older man.

He raises his hands, slow and unconcerned. He smiles chillingly and responds, voice cool and smooth. "I brought no weapons." Nothing but his fangs, anyway - the shadows were already here to do his bidding. "Oh, I may have slipped through the cracks. This place is not nearly as secure as you might think."

Though he appears to be unconcerned, his enhanced senses - natural and supernatural - are all focused tightly on the finger Jack holds on the trigger. Even he could be hurt by bullets, and it would do him little good to rescue his sire only to be captured himself. In order to dodge any bullets, he has to be in motion the instant the trigger is pulled - he is faster than the man, but not the gun.