Aileen overcame all the difficulties and got engaged with Claude. Just when she thought she found her happily ever after, she receives news that a demon named Ashtarte attacked a human village in the Mirchetta region. Sensing new dangers, Aileen infiltrates Mische Academy in the Grand Duchy of Mirchetta to investigate the situation. There, she meets James Charles, the last boss of Regalia of Saints, Demons, and Maidens 2 as well as the other quirky members of the student council.
I have to search this academy 
and find out how closely things
عليّ البحث في هذه الأكاديمية وأعرف قرب سير الأمور
Ich muss mich an der Akademie umsehen
und herausfinden, wie weit die Dinge
Tengo que indagar bien
y ver cómo van las cosas
Tengo que indagar bien
y ver cómo van las cosas
Je dois infiltrer cet établissement
pour observer à quel point
Devo fare delle indagini 
e scoprire quanto i fatti avvenuti finora
Preciso pesquisar esta escola
e descobrir o quanto
Я пробралась в её стены, чтобы узнать,
насколько происходящее…