[@Raineh Daze]

He will agree to the terms just so he can break them later. He would have remained passive would it not had been for Nanoha saying something which made him think. "To make all the humans disappear? Yes, that's exactly what needs to be done. Change history and Everything to it." In order to save what pride he still has, and exact a sort of revenge on humanity as a whole for making him go through all this. A last revolt against the fate he now have no wish to be a part of. So in a matter of speaking, he'll undergo a big personality change from someone wanting to rule to someone out to destroy. If he could undo the people of this world he could also erase him ever being here and being beaten. So at the most opportune moment later, he'll be likely trying to kill as many innocent lives as he possibly can. Probably leaving a few alive so that people like Mordred couldn't fight him with too much forceful attacks with all the civilians around. An evil thing to do. But he's really in a horrible mindset and mood now, Inuyasha showing up would surely not help much xD