Ten years ago, in order to protect Lan, Fial did not hesitate to use one of his eyes to exchange an oath with the Demon King. ． ． ． ．
Lan Wuyi knew Fial's secret, and he vowed to kill the Demon King to break Fial's oath with the Demon King, just because spending the rest of his life with Fial was his greatest wish. ． ． ． ． ． ． ． ． ． ． ． ．