Idk i found this unnatural.
1. MC just get inside king chamber without knocking first? Thats just impolite just because he use close term call? From what i know medieval nobless have to always ask permission (in this case to get inside the king's private chamber *knock the door and annouce your arrival*) before doing somethin that has something to do with each other and more if it has somethin to do with higher class and most of all get inside private chamber even you has the invitation, it can be regard as intrusion or insolence in nobless law itself can be punishable by death.
2. MC is suppose to be smart, but maybe because of shock he is still asking why he got accused?