It's Better Not to Come Back

"In this life, I only keep one promise." When she was in Baishui Town, she was a demon who first came to the world, and he was a teacher; When she was in the royal city, she was still a demon and he was the top scholar; They are most free when they are in the arena; Returning to the royal city, he is the champion of martial arts, a general, and the future prince-in-law... Later, she was still a demon and he became a monk.