TV-Series
Description
Muru-muru is a supernatural being who serves as the assistant to Deus Ex Machina, the God of Time and Space, in the anime The Future Diary. She resides in the Cathedral of Causality, a dimension outside normal time and space. Physically, she appears as a small girl with lilac hair and pink eyes, standing about 95 centimeters tall and weighing around 22 kilograms. Her outward demeanor is cheerful, playful, and mischievous. She finds amusement in manga and frequently annoys the diary holders with her lighthearted antics. However, this innocent facade conceals a much deeper and more calculating nature.

For much of the story, Muru-muru's role seems minor. She helps Deus prepare and oversee the Survival Game, recruiting players and carrying out tasks in the human realm. She often serves as comic relief in side stories. But as the narrative progresses, she is revealed to be far more significant. Behind Deus's back, Muru-muru manipulates the course of the game for her own personal enjoyment. She secretly favors Yuno Gasai, betting on her to win, and actively aids Yuno's schemes.

Muru-muru is the one who confirms Aru Akise's theory about Yuno's true origins from another timeline. She then becomes the driving force behind the story's time-travel twists. After Yuno wins the first survival game but fails to resurrect the dead, Muru-muru helps her travel back in time, creating an alternate timeline where Yuno kills and replaces her other self. Later, Muru-muru and Yuno travel back again to create a third world, pursued by Yukiteru Amano and Minene Uryu, who are imbued with powers by Deus. In the final battle, the second world's Muru-muru aids Yukiteru in escaping a dream world created by Yuno. After Yuno's death and Yukiteru's ascension to godhood, Muru-muru ultimately atones for her manipulations by giving the third world's Yuno the memories of the first world Yuno, allowing Yukiteru and Yuno to reunite.

Muru-muru's key relationships are with Deus Ex Machina, her master whom she eventually betrays for her own amusement, and with Yuno Gasai, whom she supports as a co-conspirator. She also interacts with Yukiteru, first as a distant observer and later as an unexpected ally. In the spin-off Future Diary: Paradox, she takes on a more active antagonistic role opposite Aru Akise.

Her notable abilities include time travel, interdimensional movement, and the power to influence the survival game's events. As a servant of the god of time and space, she possesses supernatural strength and knowledge beyond normal human limits. Her motivations shift from loyal obedience to self-serving entertainment, and finally to remorse and redemption. This development from a seemingly trivial comic figure to a central manipulator and then to a penitent helper makes her one of the series' most complex characters.
Cast