You make something so complex sound so easy. [ It's not his fault. He doesn't know. ] It's not a matter of keeping sane. I've likely long since lost my chance to make a bid for freedom by killing whoever amd whatever it is holding the strings.

[ Back when he was first summoned. If he had been able to find out who it was then, then maybe he could have done something about it. A breif period between being summoned and signing that peice of parchment. ]

You should already be aware that a demon can't attack the person who holds it's contract. They're absolute, beyond even my power. For me to obtain freedom from it, the holder has to die. For me to do that, they'd have to offer their life.

[ Like how the Founder of the Shomonkai had with Belberith, though then again, he doesn't think an actual contract was involved. More mutual agreement, he shploses. Something easily broken. ]

And beyond the fact that I don't want to be anyone's puppet, I want to know if it's even possible. You're around the same age as me. What would you do if you had eternity with no end to look forward to? What happens when you complete your goals? What about when the world changes and you're forced to stagnation? You could say find another hobby, but eternity as a concept all on it's own is frightening, isn't it?