When Arata stumbles upon Lilith's Grimoire, everything changes as a mysterious girl, Lilim, emerges, claiming them as her parents. As Lilim appears, the forbidden Eternal Library awakens, releasing the powerful White Demon Lord hell-bent on overthrowing Arata and the Trinity Seven. With the world at stake, a fierce showdown unfolds, pushing Arata and his allies to the brink in a final stand to protect everything they hold dear.