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 can understand why you 
might space out around her,
Ich kann nachvollziehen,
warum du in ihrer Gegenwart abdriftest.
Es comprensible que sueñes 
despierto a su lado,
Es comprensible que sueñes 
despierto a su lado,
C’est bien normal 
que tu l’admires aussi.
Capisco che un ragazzo possa sentirsi
 un po' su di giri in sua presenza,
Eu entendo você se deixar
 levar por conta dela,
неудивительно, что её 
присутствие кружит тебе голову.