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...
They're all my precious family.
Sie alle sind meine wertvolle Familie.
Lo hago por mi querida familia.
Lo hago por mi querida familia.
C’est ma précieuse famille !
Qui c'è in gioco la mia preziosa famiglia.
Elas são todas da minha família.
Они все моя драгоценная семья!