Wait, huh? There are 2 traitors on Yuuichi's team? And he won't reveal one because he doesn't know the identity of the other? So its Tenji and Yutori right? I mean Shibe is obviously too stupid and has already almost gotten himself ratfucked by the game.
Yutori is stupid too but she's so unbelievably stupid that its likely on purpose and she'll be the final boss "cunning thot" type.