Quote Originally Posted by MFauli View Post
Regarding Shinichi´s fear for his parents: Couldn´t he tell Migi straight-faced that any scenario in which his parents die, would be followed up by Shinichi killing himself, thus Migi dying, too? Im trying to put myself in his shows, and if I knew some monster was about to murder my family, Id make that overly clear: My parents being killed is not an option. If you kill them, I will reveal the truth to society/the government. I dont care if you threaten to kill or mutilate me. My parents dying = Myself dying. So DO NOT DO IT.

Surely, that should work as a statement against a monster that acts purely on logic.
Migi has already said that he's more than capable of controlling Shinichi's actions and stopping him from going to authorities or killing himself. Making Shinichi physically mute (and probably a cripple as well) is not an issue for him. Granted, now that they're being attacked by other parasytes as well may change things up a bit, but it still stands that Migi will take such drastic measures if given an equally drastic threat.

Going with logic, he also understands that Shinichi may be trusted because their cooperation keeps him alive. However, the parents have no real reason to keep their secret on the basis of self preservation.