Aileen finds out that Claude's aide, Keith Eigrid, has been selling demons. Keith tells Aileen about the reason why and reminisces about their past. Now that Aileen knows his true feelings, she decides to cooperate with Keith to prevent Claude from despairing about humanity and turning into a demon. At the same time, Cédric and Lilia visits the demon lord's castle to tell Claude Keith's secret?!
The demon lord will awaken as a dragon when 
he can no longer contain his negative emotions,
سيستفيق ملك الشياطين على هيئة تنين
،عندما لن يعود قادرًا على احتواء مشاعره السلبية
erwacht er als Drache
und wird zum wahren Teufel,
el Señor Oscuro despertará como dragón
cuando no controle sus sentimientos
el Señor Oscuro despertará como dragón
cuando no controle sus sentimientos
le Roi-démon se transformera en dragon
sous le poids de sa haine
il Re Demone si trasformerà in drago
 quando non riuscirà più a controllare
Quando não puder mais conter
suas emoções negativas,
едва Князя Тьмы
захлестнут плохие эмоции,