A long time ago, a family called Hunting Spirits worked hard for a demon king named Yan. This task was called Hunting Spirits, which means hunting souls...
Her name is Yihan, the youngest of the Thirteen Knights, nicknamed "Thirteen" by the knights. She lost her mother when she was born and her brother when she was 16. For her brother's last wish, she and the holy beasts - Ruyou and Ruyue, work hard to live and do their jobs well.