“A big brother always protects his little sister…even if it turns the whole world against him!” The enemy is finally making their move, seeking the Demon Lord’s power hidden within Mio’s body. But during the assault, a pinnacle moment of Basara’s past is revealed, and with it, a true glimpse of his mysterious power—the Banishing Shift! Is the combined strength of Mio and her protectors enough to triumph or have they already reached the limits of their familial bonds?
