The guardians protecting the world from the dark empire of Sauron, Pure White Tsukuyomi Leika and Pure Black Hikari Sakura. During a break in their daily routine, Leika pushes aside the male students gathered around Sakura, her actions revealing a deep, intense interest in her. But the surrounding commotion quickly falls silent as an ominous atmosphere spreads. Suddenly, the legendary monsters Gigant and the King of Death appear, beings said to bring terror by destroying everything on the surface before returning to slumber. As the battle rages on, where has the King of Death vanished to? This mystery plays a crucial role in the story's climax.