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.
We'll need one if there's a chance 
that this is the work of a demon.
.سنحتاج لواحدة حال كان هذا من فعل شيطان
Si es cosa de un demonio,
necesitaremos seguridad.
Si es cosa de un demonio,
necesitaremos seguridad.
Si on a affaire à un démon,
la prudence est de mise.
Ne avremo bisogno, 
visto che forse è opera di un demone.
Se isso for obra de um
demônio, vamos precisar.
Если преступник чудовище,
то в одиночку ходить опасно.