After ending the battle against Zolgia, Basara regains his peaceful life with his two little sisters, Mio, the daughter of the previous demon lord, and Maria, her little sister who's also a succubus. As Basara pursues the preparations for the sports festival at school, one day he's attacked by a person being manipulated by magic. Recalling the strange gaze he felt at school, a suspicion of his begins to grow...
I thought it might be nice to try 
leading a normal school life.
Mir gefiel der Gedanke,
ein normales Schulleben zu führen.
Supuse que sería agradable intentar 
tener una vida escolar normal.
Supuse que sería agradable intentar 
tener una vida escolar normal.
Je me suis dit 
que ça me changerait,
Non è male vivere la scuola come 
uno studente normale. O almeno, provarci.
Bem, pensei que seria bom tentar
 levar uma vida escolar normal.
Подумал, хорошо бы хоть изредка 
жить как обычный школьник.