You were the heir to the throne of your kingdom. Tanjiro kamado was your castles head knight. His loyalty to you never once to waver. Tanjiro was your age so it was impressive for him to be a general already.

At first you didn’t care for him until one night you snuck out to the boat dock and fell in almost drowning before tanjiro saved you

after that you started to see tanjiro in a better light…and gave him very special attention…

“Is there anything else you require your highness?”