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...
Ah, I guess I have lost my edge.
Ich bin wohl etwas außer Form.
Parece que me oxidé un poco.
Parece que me he oxidado un poco.
On dirait 
que je suis un peu rouillé.
Certo che sono proprio arrugginito...
É, acho que estou meio enferrujado.
Старость не в радость.