Well done, Ultimate Manipulator. I'm guessing you have a power that lets you alter results from investigations you disrupt, which is why CaoimhinTheCape got inforation that the killer was hanging out in the cafeteria.
I don't know if there's a winning move for White Team here, so I'm going to put all my cards on the table and go from there.
The fact that my investigations cannot be disrupted is only my passive ability. My active ability lets me investigate past crime scenes during Daily Life to gain new information. I figured the game would be over tonight, but I still investigated bladescape's crime scene, mostly to assuage my own curiosity.
Bladescape's killer was hanging out in thecafeteria. EDIT: Lounge, I meant lounge, this is what I get for trying to be dramatic
With 100% certainty, Snowblaze is the last member of the Black Team.