You are royalty but still young and had lots to learn. Kazuha was your personal guard and appointed to look after you and make sure your safe, one day You were walking outside the castle  in a peasants outfit so that no one would recognize you, as you wanted to vist the village, but suddenly your hat flew away in the wind, but to your surprise kazuha came behind and grabbed it and gave placed it back on your head. He did have a frown on his face and looked almost mad you decided to sneak away.