Arata Kasuga is a Demon Lord candidate who possesses the “Demon Lord Element,” which is said to destroy the world. He, along with Lilith Asami, is investigating a certain ruin.
Suddenly, a dazzling light pours down from the sky. A mysterious man in a hood who looks just like Arata appears. The man has regained his power as the Demon Lord and now plans to destroy the world.
He reveals to Arata a shocking truth… Lilith is the daughter of the strongest Demon Lord! Demon Lord Candidate vs. Strongest Demon Lord. Arata is about to face the greatest danger in Trinity Seven history…
(Source: Crunchyroll)
Alternative Titles: Trinity Seven Heavens Library & Crimson Lord, Trinity Seven Movie 2: Heavens Library to Crimson Lord, Gekijouban Trinity Seven 2, Trinity Seven Movie 2: Tenkuu Toshokan to Shinku no Maou, 劇場版 トリニティセブン -天空図書館〈ヘブンズライブラリー〉と真紅の魔王〈クリムゾンロード〉