Claude loses his memory and magical powers, returning him into a normal human being. In order to show the appeal of that aspect to the public, he goes on an inspection of the third zone of the imperial capital. During this time, Aileen follows Claude and tries to confirm her position as his fiancée. However, she just ends up experiencing the bitter feelings of a one-sided love. When she returns to the demon lord's castle, she finds the heroine of Regalia Of Saints, Demons, and Maidens 2, Selena Gilbert, fighting for demon incense with Auguste Zelm, the official hero...
You should be a little kinder 
to the demon lord.
.ينبغي لك أن تكوني ألطف قليلًا تجاه ملك الشياطين
Behandle ihn doch
mit ein wenig mehr Umsicht.
Deberías ser más delicada con el señor.
Deberías ser más amable con el señor.
Hé, tu pourrais être plus gentille
avec lui.
Dovresti essere 
un po' più gentile con il Re Demone.
Você deveria ser um pouco mais
gentil com o Lorde Demônio...
Эйлин… ты хоть капельку,
но будь добрее с Князем Тьмы.