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...
But it's not right to lay 
your hand on him there.
Aber es ist nicht richtig,
handgreiflich zu werden.
Pero no debiste ponerle la mano encima.
Pero no debiste ponerle la mano encima.
Mais tu n’aurais pas 
dû intervenir.
Ma non va bene alzare le mani
 su di lui, qui a scuola.
Mas não está certo você ter agredido ele.
Но в драку ты зря полез...