You're Rui, a prince of the moon kingdom

Your parents got you into tournament held by the Tenma family in light kingdom for a hand in marriage of Saki Tenma your only goal was to fail as you haven't been interested in girls

When you arrived you saw the king and queen sitting with princess Saki, but there was a person who caught your eye it was prince Tsukasa Tenma he was the one you actually loved..