Yuno was adopted and for a while, lived an incredibly stable and peaceful life. However, when her mother began torturing her (locking her in a cage, timing the things she does), and her father started coming home later and later, Yuno began breaking down. When she locked both her parents in the cage to give them a taste of how it would feel, she mistakenly forgot to feed them, which caused their deaths. After the passing of her parents, Yuno started looking for other emotional support systems, something she desperately needed. She found it through Yukiteru Amano, a fellow classmate, who suggested the two married when they're older. It was this dream Yuno clung to if only to keep her sane.
It is later revealed that Yuno had won the 1st reiteration of the Future Diary survival games after Yukiteru committed suicide so she could win. However, later when she wins she attempts to revive Yukiteru she finds out that although his body may be revived, his soul cannot. To reconcile with her mistake, Yuno travels back in time and kills the second world Yuno in order to take her place in the game and ensure Yukiteru survives by protecting him from any harm.
Deredere Feats[]
In the English dub of the anime, Yuno calls Yukiteru by affectionate nicknames like "sugarbear" and "sweetie."
Although she is normally lonely, around Yukiteru she becomes cheerful and lovey-dovey.
She dreams of getting married to Yukiteru.
She shares a drink with two straws with Yukiteru on their date.
She always cutely blushes whenever she's with Yukiteru.
She kissed Yukiteru once by force.
When she sees her happy ending on July 28 in her diary, she is very surprised, happy and embarrassed.
She gets shy when inviting Yukiteru to her house.
She had a wedding rehearsal with Yukiteru.
She has sex with Yukiteru.
When she reincarnates in the 3rd world after Yukiteru becomes God, she comes back as a much happier and saner person thanks to Yukiteru's wish. Her parents are still alive and she has a great relationship with them, however, she can't help but have a strong feeling that something important to her is missing. After she eventually regains her past life's memories of Yukiteru she is able to reunite with him in the new world, this time completely free from insanity.
Yanderu Feats[]
Whenever Yukiteru is with other people, such as friends or family, Yuno will go out of her way to drive them away.
She stalks Yukiteru.
She learns that Yukiteru will give a love letter to the girl, Moe Wakaba, who is the class representative, and when she sees Moe in class, she starts writing "die" in her notebook.
She ruins Yukiteru and Moe's chance to get close while shopping by wearing a rabbit costume out of fear that her future will be destroyed. However, Yukiteru gives the love letter to Moe anyway, but Moe rejects him. Yuno is relieved despite being caught by security.
Even though her family is dead, she talks to their corpses as if they were alive and tells them that she will bring her husband Yukiteru to them soon.
She often kills other diary users to protect Yukiteru.
When Yukiteru sees the corpses in her house, he runs away in fear. Yuno follows him and says "good night Yukki" to him from the mailbox gap in his house door.
and when yukiteru tells her that he doesn't trust her because of his talking to tsubaki and the corpses in her house, she cries and wishes tsubaki would just disappear
She plans to kill Tsubaki Kasugano because she is close to Yukiteru and manipulated Yukiteru.
She threatened to kill Tsubaki with an axe.
Later, when Tsubaki forcibly kisses Yukiteru, she goes crazy and tries to kill her with an axe, but only succeeds in cutting off her hand.
She sneaked into Yukiteru's house and did all the housework to get his mother to accept their relationship.
She tries to kill Yukiteru's mother but stops after his mother accepts her and their relationship.
She tries to stab Akise Aru because he is in love with Yukiteru and he playing games on Yukiteru's life but she fails.
She stabbed Mao Nonosaka because she tried to kill Yukiteru.
Because Hinata is close to Yukiteru and they are friends, Yuno thinks Yukiteru might be in love with her, so she tries to kill her.
When Yukiteru declares Yuno his girlfriend, Yuno drops her knife.
When she and Yukiteru go to the police station because they are suspicious of the death of the 10th, her eyes become lifeless after she sees in her diary that the 4th will do something to Yukiteru and kills half of the police with a fire extinguisher.
She kidnaps Yukiteru and locks him up to keep him safe.
When Akise and the others come to rescue Yukiteru, she tricks Hinata with a fake e-mail, ties her up, and tries to kill the others by trapping them in a room filled with poisonous gas, but she fails, and then continues to follow Yukiteru because there are still enemies.
While protecting Yukiteru, she gets excited when Yukiteru praises her and quickly deflects all the knives ai throws at her.
She plans to kill Akise because he will reveal her secret, other things she has done, and because he is close to Yukiteru.
She manipulates Yukiteru by lying to him about Hinata, Mao and Kousaka betraying him and Akise trying to kill her, and laughs maniacally when she sees in her diary that Yukiteru killed Hinata.
After the truth about herself is revealed, she tells Yukiteru in the causality quadrant that she sees everyone as pawns and that she hates this world that doesn't allow her and Yukiteru to be together.
She tried to kill Yukiteru with axe, knife and god powers for the 3rd world's Yukiteru.
She says that she compares herself to a moon that is half bright and half dark, then she says, "Isn't that right Yukki?"
She sacrifices herself to ensure that Yukiteru would win.
While she doesn't remember memories in the third world, she loves the third world Yukiteru, so she spies on his girlfriend Moe Wakaba and him after school with a telescope.
Yuno and Yukiteru along with the 7 murmur after becoming gods,
Yuno bloody,
Yuno holding an axe.
Yuno's infamous "Yandere Face".
Yuno threatens to kill Tsubaki with an axe.
Yuno kills the 12th with an axe.
Yuno cuts off Tsubaki's hand with an axe.
Yuno stalks Yukiteru.
Yuno takes Hinata hostage.
Yuno saw in her diary that the 4th would kill Yukiteru.
yuno saw akise aru kissing yukiteru.
Quotes[]
Future Diary
Mom… Dad… I will soon introduce you to my future husband. —Yuno Gasai, from Future Diary
I still have a future, as long as I protect him, my future as his wife will still be there. —Yuno Gasai, from Future Diary
Your future belongs to me. —Yuno Gasai, from Future Diary
Don't worry Yukki, Yuno will protect you. —Yuno Gasai, from Future Diary
Good night Yukki... —Yuno Gasai, from Future Diary
How dare you talk about my curses? I'll kill you, bitch! —Yuno Gasai, from Future Diary
Choose me and live or choose sixth and die. —Yuno Gasai, from Future Diary
I'm glad Yukki's mother is a good person, I didn't have to use any of the tools I brought. —Yuno Gasai, from Future Diary
I'm selfish, I know. But to keep you only mine, I will do everything I need to do, even if it's illegal. —Yuno Gasai, from Future Diary
I'm the only friend you need. —Yuno Gasai, from Future Diary
Yukki, if you get along with this girl, you might fall in love with her. That's why I must kill her. —Yuno Gasai, from Future Diary
I was practically dead, but you gave me a future. Yukki is my hope in life, but if it won't come true then I will die for Yukki, and even in death I will chase after Yukki. —Yuno Gasai, from Future Diary
They are all planning to betray you!. —Yuno Gasai, from Future Diary
You're the only person I have. No matter what happens. I will always, always have my eyes on you. —Yuno Gasai, from Future Diary
I may only be good for killing people, and maybe I am completely unappealing to you, but I thought you will love me once this was all over. —Yuno Gasai, from Future Diary
I'm crazy?! What's crazy is this world that refuses to let me be with you!. —Yuno Gasai, from Future Diary
Everything in this world is just a game and we are merely the pawns. —Yuno Gasai, from Future Diary
A half moon. A bright half and a dark half. Just like me. —Yuno Gasai, from Future Diary
