Yukiteru Amano (Yuki) is a loner who never really interact with people and prefers writing a diary on his cell phone with his only companion being an imaginary friend named Deus Ex Machina, the God of Time and Space. However, Yuki soon learns that Deus is not a figment of his imagination but real when Deus makes him a participant in a battle royale with eleven others. Within this "Diary Game", the contestants are given special diaries that can predict the future with each diary having unique features that gives them both advantages and disadvantages.
Yukiteru Amano thinks the only two things he has in life are his diary and an imaginary world of his with two friends: Deus Ex Machina and Murumuru. Things change when his diary starts predicting the future.
Having bested the Third Diary User with the help of Yuno, Yukiteru now has a giant target painted on him. A bomb wielding Diary User takes the school hostage, and Yukiteru must decide if he can trust Yuno, even though she's been stalking him!
The alliance attempts to lure the third diary owner into a trap, but she lays low for a day while recovering. Yuki later stumbles upon something at Yuno's home that he shouldn't have: bodies.
Ninth is now in possession of Twelfth, a traitor in Sixth's cult. Sixth is able to trick Yukiteru, but Yuno tries her best to stop her. Yuno is eventually kidnapped by Sixth and Yuki comes to save her, realizing that he is in love.
The Twelfth's assault on Tsubaki continues, with Yukiteru caught in the crossfire. As the truth behind the cult is revealed, who's side is the Sixth really on? Who is Yukiteru supposed to trust? And what does Kurusu really want with Minene?
Yukiteru's mother comes home to find that he has a new "girl friend". Yuno and his mother bond quite well, but Yuno may have eyes not only on his mother, but on her "bag of tools" as well.
After finding out that little Reisuke was the fifth future diary owner, Yuno puts her entire life in danger to save Yuki once again.
School is back in session and Yuki is nervous about making friends. Yuno would rather he just didn't. Another Diary User is making a play, people are being murdered left and right and who is Aru Akise and why is he so interested in Yuki?!
Akise the "boy detective" is on the tail of fugitives Yukiteru and Yuno. Does Yukiteru KNOW he's a fugitive? Hinata, Mao and Kousuke get recuited in the manhunt, but they may not be prepared for the consequences. Then, Murmur and Deus make a bet.
Minene and Murmur take a stroll down memory lane, though they don't quite agree on how things played out. Meanwhile, Yukiteru and Yuno spend the day at a wedding fair. Because who doesn't want to play dress up with a psycho killer girlfriend?
Kurusu sets his plan to take out Yukiteru and Yuno into motion, and the bullets start flying. So much for that alliance! But what sort of deal did the Fourth make with Minene? Three Dead Ends are triggered; no one knows who will make it out alive.
Negotiations have failed and the Fourth goes in for the kill. Yuno shows the lengths she'll go to keep Yukiteru alive, but how far will he go for her? Meanwhile, the Ninth really wishes she and a certain cop would stop meeting like this.
Yuki decides to visit his father with Yuno to retrieve a telescope, but when Yuno decides she knows best for her future husband, she kidnaps him. Now Akise, Hinata, Mao, and Kousuke to save their friend from a psychopathic stalker.
Yuki's friends are caught in a death trap and Yuno? She's forgotten who any of them are. However, she hasn't forgotten how to get and keep the upper hand. A ray of hope arrives in the form of a Diary, but remember, every Diary has its limits.
After a futile attempt at discarding Yuno, Yuki is faced with trying to overcome his weakness and fend for himself. The gang takes refuge at Kousuke's manor. The Diaries of Exchange reveal themselves for a battle between lovers.
Minene trains Yukiteru for... something? And his dad suddenly appears for a visit! Maybe, just maybe life can go back to normal. Except that the Sevenths have Yuki and Yuno's cell phones, and Dad has a secret.
The battle with the Sevenths reaches its explosive climax! Will Ai and Marco's "real" love defeat Yuno and Yukiteru's "fake" love? The two couples square off, but only one will make it out alive.
Families are special. Once upon a time, Yuno Gasai had a family... It didn't go so well. As Yukiteru deals with the fallout of his father's crime, Murmur offers a solution to all his problems: "Kill everyone, to save everyone."
The Eleventh is revealed, and all the players unmasked. Yukiteru's new-found resolve is seemingly unshakable. He will kill anyone and everyone between him and godhood, with Yuno at his side. Unless there is more to this story than he knows.
The Eleventh is about to make a move that will transform the entire city, and Minene is determined to take him down. And she's got help doing it... not that she asked for any of it! Nishijima chooses a side, and many things explode.
Uryuu Minene teams up with Yukiteru again to terminate John Bacchus, but under certain condition. Aru and Yuki's friends try to stop Bacchus' plans while the world witnesses dawn of the Apocalypse.
Yukiteru with Yuno's aid is trying to find and kill Kamado (#8) but has to confront his best friends in order to do so. Meanwhile, Aru finds out a secret about Yuno's origins and also - about his own.
It's three days till the end of the world. Yuki tries to figure out Yuno's motives, and debates giving her the Happy End she's been after all this time. But that might not be enough for Murmur, she wants things interesting...
When Yuno decides to end the game earlier and use her power to reverse the time once again, an unexpected ally comes to Yukiteru's help to prevent Yuno's actions.
Yuki decides who he has to save. Yuno decides who she has to kill. Minene keeps her promises. And Murmur... There is even more to Murmur than anyone knew. And the fate of more than one world lays in the balance.
Yuno is dealing with troubles in effort to kill herself and Yukki is captured in a fake world while the conclusion of the game draws near.
Complete episode guide for Mirai Nikki with detailed information about every season and episode including air dates, summaries, ratings, and streaming availability in United States.
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