Ard is feeling guilty as they stay in Lydia's villa while awaiting their deployment. Before he can shake those feelings the battle against the demons begins and Ard's group is left in charge of logistics. Ard recalls that there wasn't any major trouble in this battle, but the demon appears before them in the rear. So in order to earn their meeting with the Demon Lord, Ard...
The title of "Demon Lord" was 
already taking root by this time.
لقب "ملك الشياطين" كان قد بدأ
بالانتشار سلفاً في هذا الوقت
Il titolo di "Signore dei Demoni"
 stava già prendendo piede in questo periodo.
O título de "Lorde Demônio"
já estava se enraizando nessa época.
Как я помню, к этому времени
моё прозвище уже закрепилось.