I mean this is pretty easy to solve
I HH Derps, Possessed bombs Derps
If Derps is dead town tomorrow and Possessed is alive, then Possessed is scum
If Derps is dead scum tomorrow and Possessed is alive, then Possessed is semi-confirmed (technically could be NK if Derps is groupscum, or vice-versa)
If both are dead town then … well, we’ll be kind of screwed, but this doesn’t feel like a TvT argument