To prevent their descendants from becoming demons, the ancestors of Ye He Na La created Zhen Mo San Bu Qu (鎮魔三部曲 / The Demon Suppressing Symphony) that can help their descendants get rid of their evil nature - the Soul Collecting Melody (蒐魂曲), the Soul Cleansing Melody (洗魂曲) and the Soul Calming Melody (安魂曲).
Verso la fine della storia, i poteri di questa famiglia vengono distrutti ed i membri rimenanti messi in fuga.