However, when Murmur tries to give Takao a cellphone diary, he keeps destroying it, causing him to repeatedly vanish into a vortex. Murmur tells Bacchus that the name of his diary is the most perverted compared to the rest of the other diaries. While searching for the bathroom, he opens the door to a room containing three decomposed corpses, an act which changes the future of every Future Diary owner drastically. In the bathhouse, Hinata finds Murmur in a basket, declining a wish that she offers. Yuno figures out that Reisuke has mailed his diary to himself in order to hide it and has Yuki intercept the delivery, but he falls prey to a trap hidden in the envelope. Furthermore, unless a successor is determined soon, all of existence will collapse. However, the wall is demolished and the corpses are buried in a deep hole in Yuno's garden.
In the present, Aru challenges Hinata to guess which hand he is hiding a coin in, with his diary as the forfeit. When Balks' incomplete diary reads the results in Yuki's diary, he calls off his partnership with Deus; cancelling the survival game and must find another method to determine his successor. The next day, Yuki's mother brings home Reisuke Houjou, a young boy whose parents were killed at the Sacred Eye incident. There, he reveals himself as a Future Diary owner, drugging and torturing her to get information on other diary owners. Yuno calls Yuki to prevent Aru from contacting him and tells him Aru tried to kill her and that he should not trust any of his friends.
The future somehow changes and Yuki gets a clean shot at Keigo. She tells him how to be a free spirit, looking at the world at an existential point-of-view. Yuno catches up to them and once again tries to fight them alone, while Yuki hides and attempts to help her with his diary's predictions. Working together, Yuno, Keigo and Yuki's classmates distract Uryu, allowing Yuki to throw a dart at her Future Diary cell phone. Despite Yuno's mistrust in everyone, Yuki decides to reveal the existence of his diary in order to defend the group against the pack's attacks.
Aru talks to Yuno through her surveillance feed, revealing he dug up three corpses from her garden, two of which had recently had their skulls removed. Murmur, disguised as Keigo, talks to Nishijima and recommends that is a dish that would be great to eat while working on a criminal case, doing a role-playing interrogation to prove that fact. As Yuno kills Kamado, a dying Aru, who knows the diary he destroyed was real, suddenly has an epiphany about Yuno. The cult's leader, , who is the Sixth Future Diary Holder with the ability to view from a what is seen by her followers, foretells her own death by the end of the day. Kosaka gets the wrong message when Ai and Orin invite him to the staff room.
After learning his family has been rescued, Keigo asks Minene to take care of his son, apologizes to Yuki and breaks his own diary, removing himself from existence. Yuki and Uryu are soon confronted by Keigo Kurusu, a police officer with a Future Diary cell phone that is able to predict crimes. Yuno expresses her disgust at how this state of affairs prevents her and Yuki from ever surviving together. Despite Yuki's efforts, Rea and Yuno meet and take a liking to each other, sharing a good dinner and viewing Yuki's baby pictures, much to his embarrassment. When Orin ask if Murmur has any parents, Murmur is reminded of Deus, who she thinks has a weird personality.
However, the door withstands the blast. After it is learned that Hinata is a Future Diary Holder, she reveals that her real target is Aru, suspecting him as a Future Diary Holder. The next day, Yuki and Yuno are hiding from the police when they notice Keigo's wife visiting a hospital. However, one morning, he finds his diary entry for the day has been filled in already. Mao attempts to destroy Yuki's diary, but Yuno injures her. Although Yuno evades numerous traps set by Reisuke, she eventually finds herself at his mercy. Murmur meets Keigo in a restaurant to introduce him to the survival game, but Keigo goes on about how he became a cop after being punished by his father for stealing an action figure from a store.
Meanwhile, Murmur wants to start a new survival game, coming up with archetypes for new cellphone diaries, but more versions of herself appear around her. Realising Yuno's devotion to him, Yuki gathers his courage and manages to reach her in time, but Tsubaki gloats that as long as he's in sight of her followers, her diary will predict his every action. As Yuki combines his ability to predict everything happening around him with Yuno's ability to predict everything happening to Yuki himself, the two manage to evade danger, until Minene threatens to detonate all the bombs unless Yuki is handed over to her. Yuno manages to kill her captors, cut off Tsubaki's hand and hand Yuki her diary before collapsing from exhaustion. There, he reveals himself as a Future Diary Holder, drugging and torturing her to get information on other Future Diary Holders. As she walks away, she says that Yuki must kill Yuno as soon as possible before Yuno becomes his worst enemy.
Keigo sends Yuki and Yuno to an amusement park to act as bait for Uryu. At the amusement park with Aru again, Murmur eats one of her candies, which turns her into an adult, to allow access to certain rides. Yuki refuses and instead suggests that they die together. At night before bedtime, Yuno checks her cellphone and feels like she is forgetting something important. His plan is to lure the apprentices in, then deactivate the area's cellphone tower, severing their connection to the server of the Eighth Future Diary Holder. Yuno, Keigo and all the classmates work together to distract Minene, allowing Yuki to throw a dart at her Future Diary cellphone. Murmur confirms that Yuno has indeed played the survival game once before.
Since he can't understand why Yuno would lie to him, he decides to get the truth from her by fulfilling her diary's prediction earlier. Yuno then takes advantage of Kousaka's distraction and shoots at him with a crossbow. Meanwhile, Uryu is released by Yomotsu only to get captured by Keigo, who eventually lets her go in return for her contact information. Murmur has Yuno dress up like a and then a , both of which scares Yuki away. The next day, Yuki goes after his father, expecting him to lead him to evidence. If you like the genre Adventure, Anime look like at the end of the news.
In the illusionary world, Yuki soon realizes he fell in love with Yuno because she was his life supporter. Yuki is captured by his classmates, angering Yuno who runs down the corridors, causing several classrooms to explode on purpose. Knowing that Yuno intends to kill her past self in this world as well, Yuki rushes to her house with Minene. In a flashback, Keigo forms an alliance with Uryu, promising to stop pursuing her and asking her to take care of his terminally ill son if he is eliminated from the Survival Game. Most likely, the creators of the series is not going to stop work on the project, and already may soon see a message about the release date of the new series Future Diary. Aru sets up Yuki and Yuno on a date to a bridal fair for a mock wedding, where they meet Keigo's wife, Naoko Kurusu, while he investigates Yuno's house.