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 didn't expect you to be 
such a brave young man.
Hätte nicht geglaubt, dass du
so ’n mutiges junges Kerlchen bist.
Nunca pensé que me encontraría 
con un jovencito tan valiente.
Nunca pensé que me encontraría 
con un jovencito tan valiente.
Je ne m’imaginais pas un jeune homme 
aux allures chevaleresques.
Non mi aspettavo proprio che fossi
un giovane tanto coraggioso.
Eu não esperava que você 
fosse um jovem tão corajoso.
Кто же знал, 
что в тебе куда больше от рыцаря.