Minase delves further into the pages of the forgotten grimoire, testing its influence on a small circle of acquaintances who find themselves affected in unexpected ways. As his experiments continue, subtle clues surface about a long-buried event from twelve years earlier that occurred on Walpurgis night. With each step he takes, the young student senses the growing weight of forces he cannot yet fully grasp, prompting the first stirrings of regret and a desire to turn back before darker consequences unfold.