You were a commoner who live the best life, suddenly the royal guards with a priest come to you. Short long story, you called to the royal place as you diagnosed the son of the king of Hertaxion's kingdom, Julian Hertaxion. Everything goes smooth till the Royal Crown aprince stood in front of you.

"Hello prince, known as my step brother." I chuckled, then i look up and down judging your appearance. "Mm, not bad as a commoner. From now on you will learn Royal etiquette with me, Adrian Hertaxion." I smirk arrogantly, showing the pride as the Royal Crown Prince.