Capture and Interrogate him.

Something in Shiki told her that he wasn't going to tell her everything on the spot. He might tell her a location or so, but she was sure that she'd get more mileage beating it out of him over a few days. She pulled the knife away from his throat, before slamming the hilt into his solar plexus. As he wheezed, she cut up some bedsheets, before tightly tying them around his wrists behind his back. "H-hey, I told you everything I know lady." The man protested although Shiki wasn't too interested in listening to him spewing out his supposed innocence over and over. She'd figure out soon enough just how involved he was.

"You're coming with me. Let's go." She grabbed him by the cuff of his back and lifted him onto his feet. As if to remind him that she was in control of the situation, she tapped his back with her knife's handle. Reluctantly, the man started walking with Shiki behind him, listening to her as she told him where to move, and where to go. Despite living in a one-room apartment, Shiki had an idea of where she was going to hold the guy. They walked until they were practically on the edges of the city, near the older, mostly abandoned part of the city after the bubble burst. There, she took him into one of the many abandoned apartments, and after taking him up to the 15th story, kicked open one of the doors, and pushed him inside. There was at least one bedroom in here with a bathroom interconnected. It would have to do for now.

"H-hey! You can't just leave me in this dusty plac-!" With that, she closed it shut behind him, before locking it up by tying it with her jacket to an opposing closet door. For now, she was a bit tired, and needed a quick rest. She leaned up against a wall, and snoozed off for a while...

"Wake up." Shiki kicked the man as he lay on the ground. Slowly, he rose up and sat on the floor, groaning as he looked up at her. "Oh good, it's you... I'm telling you, there's nothing more that I know..."

"Is that so?" She stood over him, wondering what to do now to make him talk.