Thanks for the chapter!
Seems the princess is in a hurry to marry MC. As for agreeing to open the tower should've found out more about it first. Noah seems too driven about them getting the keys to open it, especially by any means possible despite being head of security. Might be wrong but I think he might be responsible for elves and beastkin fighting, too into observing for right moment to look good rather than act, too full of himself, and going to do something terrible with whatever is in the tower while scapegoating the demon princess and MC. After all, in these stories one of the common traits of scummy humans are being human supremacists, feeling entitled or justified using slave collars that can kill on non-humans, and using sneaky or dishonorable methods rather than face things upfront.