Jun paused briefly, sensing that the kid he was trying to study was watching him. He didn't care if he looked obvious in his scrutiny-Jun wasn't the one in hiding, after all. The clothing and the sunglasses were suspicious, but it wasn't enough proof for Jun. If he continued to keep an eye on this boy, Jun would figure it out soon enough. He was almost sure, but not quite enough to make a grab for him. He'd have to trail the boy for a little while yet.
When the boy started walking away, Jun busied himself by putting the files on his bounty back into his backpack, though watching the boy out of the corner of his eye. After waiting long enough, he started walking at a leisurely pace, slow enough to seem casual, quick enough to keep within line of sight. Jun kept his arms down by his sides as he walked, trying to keep his pace and stance as casual as possible, but his gaze was zeroed in on his target.
He was watching carefully for anything that stood out to him, anything that came across as paranoia, or something. Jun wasn't entirely sure what exactly he was looking for yet, but he knew the kid was watching Jun too. The thought gave him a little bit of pleasure. If it was just some random punk, he'd probably have asked Jun what the hell he was doing already, but since the kid hadn't said a thing to Jun, just walked away, was starting to confirm his suspicions.
He picked up the pace just slightly. if this was his prey, then it was going to be a fun chase.