To prevent a clash that may happen between Anos and humans 2,000 years in the future, Hero Kanon proceeds with the plan to become an imposter Demon King himself, with Shin agreeing to this decision. Gradually but surely, Shin begins to change, and Leno realizes that she loves him. However, after fulfilling his duty to protect her, Shin begins to  leave her side...
And then one day, I found myself facing off
against someone known as the Demon King.
ثمّ ذات يوم، وجدتُ نفسي في مُواجهة
شخص يُعرَف بملِك الشّياطين
Un día enfrenté al infernal
al que llamaban Rey Demonio.
Un día me enfrenté al infernal
al que llamaban Rey Demonio.
Un jour,
Poi, un giorno,
И вот однажды…