Future Diary

The Future Diary debuted in Monthly Shōnen Ace in March 2006 and ran until February 2011.

The creator, Sakae Esuno, developed the work inspired by psychological thrillers and the growing culture of mobile technology in everyday life.

The manga caught attention for its unique premise combining diary-based foresight and a death game, quickly developing a strong following.

The story takes place in the fictional Sakura City in Kanagawa Prefecture, Japan.

The core setting revolves around an alternate reality orchestrated by Deus Ex Machina, the god of time and space.

Twelve individuals are randomly chosen by Deus and are each granted a Future Diary—an object (usually a mobile phone) that predicts a certain type of future.

The rules are simple yet brutal: only one can inherit godhood, meaning the others must perish.

Yukiteru Amano is a socially withdrawn middle schooler who prefers observing over participating.

His only friends are the imaginary Deus Ex Machina and his assistant Muru Muru.

One day, he discovers his cellphone diary has started predicting the future.

Soon, Yukiteru learns that eleven other people possess similar diaries, each with its own unique prediction mechanism.

Deus declares a survival game—the last person standing will succeed him as god.

Among the competitors is Yuno Gasai, Yukiteru’s beautiful but obsessive classmate, who possesses a "Yukiteru Diary" that predicts Yukiteru's future every ten minutes.

Despite being stalked by Yuno, Yukiteru joins forces with her due to her immense devotion and the dangerous situation.

Each diary holder has their own motivations, backstories, and game strategies, from serial killers to detectives, cult leaders to terrorists.

Trust and betrayal, love and madness blend as Yukiteru and Yuno spiral deeper into this high-stakes contest, confronting their own morals, traumas, and desires for survival.

In a shocking twist, it’s revealed that Yuno is not who she seems; she is actually a version of herself from an alternate timeline, looping the game to be with Yukiteru after failing to resurrect him in her original world.

With time-travel, sacrifice, and cosmic intervention, the ending explores the consequences of godlike power and the persistence of love, both toxic and redemptive.

• Future Diary:

A special diary granted by Deus Ex Machina.

Each diary predicts the future in a way unique to its owner (for example: the "Yukiteru Diary" predicts events related to Yukiteru, the "Investigation Diary" reports on future police cases).

When a diary is destroyed, so is its owner.

• Deus Ex Machina:

The god of time and space who orchestrates the survival game to find a successor as he approaches the end of his reign.

• Muru Muru:

Deus's mischievous assistant, who often intervenes in the game's events for her own amusement.

• Dead End/HAPPY END:

Diary entries forecasting the owner's death (Dead End) or a positive resolution (HAPPY END).

• Timeline Loops:

Central to the plot, alternate timelines allow characters to attempt the survival game repeatedly, with the second Yuno being a survivor from the first timeline.

• Manga:

Twelve main volumes, three side stories (“Mosaic,” “Paradox,” and “Redial”), plus an official fanbook.

• Anime:

A 26-episode TV series (2011–2012), piloted by studio Asread.

Also includes OVA episodes, such as "Future Diary: Redial," which expands the story’s conclusion.

• Novelization:

Two light novels exploring perspectives not thoroughly covered in the manga or anime.

• Games:

PSP games including "The Future Diary: 13th Diary Owner" with unique storylines and a new character, Azami Kirisaki.

• Live-Action Drama:

A Japanese TV drama, "Future Diary -ANOTHER:WORLD-," with an alternate storyline.

• Other:

Spinoff 4-koma manga, radio CDs, image song albums, and even slot/pachinko adaptations expand its pop culture footprint.

The anime kept much of the manga’s tone, emphasizing psychological suspense and dark romance.

Sakae Esuno participated in supervision, ensuring consistency.

Studio Asread and the creative team brought unique visual and musical flavor, blending tension, horror, and elegance.

Opening Themes:

• "Kuusou Mesorogiwi" by Yousei Teikoku
• "Dead END" by Faylan
• "Kyoki Chinden" (OVA, Redial)

Ending Themes:

• "Blood teller" by Faylan
• "filament" by Yousei Teikoku
• "HAPPY END" by Faylan (OVA, Redial)

Image albums feature tracks inspired by each major character.

• Nominated for the 32nd Kodansha Manga Award (Shonen category).
• “Redial” manga and anime received positive reception for achieving narrative closure rarely seen in death game series.
• Candidate for the 43rd Seiun Award (Comics category).

The Future Diary has sold over four million copies in Japan.

Its blend of psychological horror, unpredictable plot, and iconic characters like Yuno Gasai ("queen of yandere") has influenced anime memes, fan works, and genre conventions.

The anime adaptation is praised for its pacing, dramatic score, and the nuanced portrayal of obsession and trauma.

The ambitious plot with multiple timelines, unreliable narrators, and a darkly romantic undercurrent appealed to fans of suspense, horror, and complex relationships.

• Post-series, Sakae Esuno created "Big Order," another mind-bending battle manga, drawing in part from The Future Diary’s success.
• Yuno Gasai remains one of the most recognizable "yandere" characters in anime culture.
• Sakura City and many character names are inspired by mythological figures, connecting drama with classical motifs.