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...
I promised him. That the next time we
were reborn, it would be as friends.
وعدتُه. أنّنا في المرّة المُقبِلة الّتي نُولَد فيها
من جديد، سنكون كصديقين
Ich verspreche, dass ich ihm nach meiner
nächsten Wiedergeburt ein Freund sein werde.
Le prometí que cuando renaciera
sería como su amigo.
Le prometí que cuando renaciera
sería como su amigo.
Je lui ai promis
Ho fatto una promessa.
Eu fiz uma promessa.
Я обещал,