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...
She said those with weaker bodies 
should enjoy it that way.
Sie meinte, mit schwachem Körper
sollte man das Fest auf diese Weise genießen.
Dijo que me permitiría disfrutar 
del festival a pesar de mi fragilidad.
Dijo que me permitiría disfrutar 
del festival a pesar de mi fragilidad.
Selon elle,
mi ha detto che per le persone 
un po' più deboli è meglio viverlo in questo modo.
Ela disse que nós, com corpos fracos,
 devíamos apreciá-lo dessa forma.
Она сказала, что слабые здоровьем 
хотя бы так могут насладиться фестивалем.