Even the sound of the world's end cannot threaten the two of them. Now adults, Pieta and Tranz are dedicated to their detective work. Tranz's special condition remains unchanged, as people around them continue to disappear, yet for some reason, Pieta does not die. Pieta felt happiness in their daily lives, but the deeper secrets of Tranz's condition are revealed, and the end of the world is drawing near――!? A sisterhood suspense where women fight boldly without being swallowed by fate comes to a close here!!