We don't know how Toranosuke-kun came to his conclusions.

[Though hm. :/]

But if Elliot was right in his interpretation of what Senhime-san said, then that'd be two people who believe it's Kizakura-san. Seems unlikely that they're both messing with him.

But that said.. I thought they were only capable of seeing what we do in the trial room. As far as I'm aware, Kizakura-san hasn't done anything strange during a trial.