Arc 23The War Against the Overlord
Shiori challenged Queen Al White, won the Genesis Crystal’s recognition, and secured R'lyeh’s support for opposing the war on Earth. As Lilith unleashed a worldwide monster outbreak, Kirishima Ai and her allies joined forces to fight her, driving the battle to Earth and trapping Lilith in a strange world.
- Thousand Sins challenged Queen Al White to a sacred duel, argued against the punitive war, and won the Genesis Crystal’s recognition, becoming True King-Thousand Sins.
- Shiori gained the nobles’ agreement to follow her plan, while Haihara and Al White confronted their strained relationships with Shiori and each other.
- Kirishima Ai challenged Kazama Kiriori, won her support, and gathered crystals from her and the other girls for the combined Magic Wand.
- The gateway between Earth and R'lyeh opened, bringing monsters, Monster Disease, and black flowers across the world as the girls searched for Haihara.
- Kirishima Ai confronted Haihara at an izakaya, and Haihara transformed into Overlord-Lilith while Ai became Shining Quartet with four Crystals.
- Overlord Lilith attacked Earth and R'lyeh, but Thousand Sins joined Banyuan to fight her and the summoned Demon Kings.
- Banyuan defeated the Demon Kings while Thousand Sins fought Lilith, then led her through a spatial doorway to Earth as the sky cleared and flowers bloomed.
- Thousand Sins and Banyuan battled Lilith on Earth, and Banyuan transported her into a world of endless corridors after Thousand Sins trapped her teleportation.