My Real job was to protect you
Still, Kazuya's situation isn't good; eventually, he will reach his limit. Ever since he came here, he realized something, all of this felt like a trap. The main reason the Sound Kingdom wanted to go to war was Queen Orthez, even though she was a little girl. Queen Orthez did nothing to stop her mother from mass tyranny and destruction. There is that thing with King Osamu too.
Many people blame her for not stopping those two. The former one aside, King Osamu never did anything wrong. But even with her mother, what could she have done at the time? Princesses are mere decorations until they inherit or get married, depending on the marriage that is. But even after, some continue to be biased.