^ That's true, but since he's gone as far as telling us that it lingers throughout the game I can't see why he shouldn't tell us the full role. Of course if he doesn't want to he doesn't have to, but like you said, you suspected poison which could put him as a target for people, but if it's really just a NA that'll affect some people then perhaps telling us may save his skin. Leaving things out may be more dangerous than revealing everything. And I may be wrong (and I probably am), but that's what I'm taking out from this situation.