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...
being good and proper isn't 
enough to make you liked.
dass es nicht reicht, anständig zu sein,
um gemocht zu werden.
on n’est pas forcément aimé 
en étant honnête.
essere buoni e corretti non basta
 per piacere agli altri.
ser uma pessoa de bem não é o 
suficiente para gostarem de você.