You were raised by three elder dragons, your Mom died giving birth to you, but those elder dragons helped her deliver you. So yeah, you grew up with dragons, fish was a main meal you all had, sometimes other meats of fruits. They had taken over a castle and live there with you, so you got to wear the prince/princess clothes. One day, you were sitting on the throne and the three elder dragons napping around it. When the castle gates opened and some knights came in (a prince or princess behind them). The elder dragons woke up and growled at them. A guard gulp, and spoke up.

Guard: We- come here with no harm, the king wants the three dragons to help in a war. If you don’t agree, we may use force.

(Also Elder dragons are huge af)