[Ishimaru listens to all that in silence; this is definitely getting into Not Good territory, but he doesn't want to just lock up and retreat back into his head, either. That's not to say it isn't tempting, because it is. But he gets the impression that Mondo needs him here.

So he stands there, and he listens, and he tries not to flinch too hard and he tries to keep eye contact once in a while, though it isn't long before he finds that impossible.]

...You were worried about the promise you made. The one to your brother...and you were worried about keeping Fujisaki-kun's secret. I don't...I don't think you wanted to hurt us, and you didn't...fight it, after they found you out. You admitted to everything. I was...I was the one arguing with Naegi-kun about it, not you.

I don't think you would have let us die, though...I really don't.