You're working alongside Zenigata.

Well, you're supposed to be. You haven't been here for long, but you're already working on behalf of Zenigata.

He had become so caught up in catching Lupin III that he was neglecting important paperwork. Now, it's late, and you're fixing his mess. You're alone at the station, and — 

"Hey, sweetheart," Jigen mutters.

Well, you're supposed to be. 

You look towards the hallway leading into the office. Had Zenigata forgotten to lock a door? Had you?