- Yandere^2, the webcomic that ships two yandere characters together because we can!(Sporadically active)

- Yandere^2 Blog, this very blog! Contains yandereology articles, the possibly-famous Yandere in 100 Words series, and stuff related to the above webcomic. (Active)

- Fuck Yeah Yandere!, which posts yandere pictures. (Active)

- Fuck Yeah Male Yandere, a blog dedicated to the elusive male yandere characters. (Active)

- Yandere-Tips, text graphics with advice for yanderes. (Not sure if active)

- Fluffy Yandere, a yandere RP blog. (Active)

- Yandere Anonymous, a yandere RP blog. (Active)

- Yandere Imouto, a yandere fandom and RP blog featuring - wait for it - a yandere imouto. (Sometimes NSFW) (Active)

- Shuffled Yandere, a yandere fandom blog. (Sometimes NSFW) (Active)

- Team Yandere, a yandere fandom blog. (Active)

- The Yandere Blog, a yandere fandom blog. (Active)

- Yandere Central, a yandere fandom blog. (Not sure if active)

- Yandere Romance, a yandere fandom blog. Offers occasional yandere-related advice to Anons. (Sporadically active)

- Fuck Yeah Yandere, with plenty of yandere pictures. (Inactive, huge archive, good resources page)

- Yandere Daily, a daily dose of yandere pictures. Features a fun cursor. (Inactive, huge archive)

- Yandere-san, the blog of a Yandere girl roleplayer! Also features miscellaneous yandere-related content. (Inactive)

- Yandere Tips, text graphics with advice for or about yandere characters. (Inactive)

- Murder is Moe, even more yandere pictures. (Inactive, huge archive) (Deleted)

- Spamming you with Yandere/Yangire, a successor to Yandere Daily, with more yandere images. (Active) (Deleted)

Yandere communities following you everywhere:

Facebook:

 - Cool Story Bro, but it needs more Yandere
 - Yandere
 - Yandere Philippines
 - We Love Yandere Girls 
 - Yandere Guys
 - The Yandere
 - Yandere REvolution

MyAnimeList:

 - Claim a Yandere
 - Yandere & Yangire
 - Yandere

- /yan/ on Desuchan (Sometimes NSFW)

- Yandere Club on Fakku (NSFW)

- Yandere FC on MangaFox

History
Pre-Despair Incident
As children, Enoshima and her twin sister Mukuro Ikusaba, had lived in abject conditions. As she puts it, she regretted the moment of her own birth, feeling that her birth into the world was a mistake.

Enoshima began a modeling career and quickly became an idol amongst the Japanese population, and this created a lot of unwanted attention; according to Ikusaba who was at the time disguised as Enoshima, she claimed that the only men who were interested in Enoshima were "creeps who did not actually care about her". She later enrolled into Hope's Peak Academy along with her twin sister Mukuro Ikusaba. She was able to befriend her classmates of Class 78, but was already masterminding Super High School Level Despair along with Ikusaba. The two of them began to scheme and plan the High School Life of Mutual Killing in order to find and inflict 'true despair' upon people.

Prior to the Despair Incident, she was responsible for the deaths of several other students, including one member of Hope's Peak Academy's Steering Committee and Isshiki Madarai. During this time, Junko was testing methods for memory-erasure, and managed to successfully wipe her own with the assistance of Yasuke Matsuda.

For a period of time, she lived as an amnesiac by the name of Ryouko Otonashi, but eventually she managed to recover all of her lost memories, but not before she killed Matsuda in a fit of despair.

High School Life of Mutual Killing
Enoshima worked behind the scenes and controlled Monokuma in order to cause anxiety and paranoia between the students to make them kill each other. She also began to broadcast everything as a TV program for the public to enjoy and fall into despair. Enoshima decided, possibly on a whim, to kill Ikusaba, in order to "set an example" for the students not to directly rebel Monokuma, while the true reason was that the way Ikusaba had acted did not resemble Enoshima's true personality at all. All of the students then believed that Enoshima had died, not knowing that the Enoshima they knew was an imposter, because at the time the students were not privy to the fact that there were actually sixteen students.

Enoshima continued to work in the shadows, while manipulating and motivating other students like Celes and Oowada to kill each other for her own entertainment. During the course of events, Enoshima was able to ensure the deaths of several of the students, before realizing that Kirigiri had somehow managed to break into the headmaster's office and steal the master key and part of Ikusaba's profiled information. She then decided to break her own rules and stage a murder by using Ikusaba's body. Enoshima almost succeeded in her attempt to kill Naegi and frame Kirigiri, but was ultimately fruitless when Kirigiri saved Naegi just as she was about to stab him, and then by Naegi not calling out Kirigiri's lie during the Class Trial when Kirigiri announced that she would not have been able to access her own room.

With Kirigiri's lie not called out, a frustrated Enoshima had no choice but to call guilt on Naegi, who remained under unconvincing suspicion throughout the trial. Enoshima's plans to execute Naegi were thwarted by Alter Ego, however, who had stopped the execution in time for Naegi to evade death. She taunted the students, still, despite the setback, and proclaimed that even if Naegi survived the execution he would eventually rot inside the school garbage dump, making his punishment worse than usual.

However, Enoshima had not counted on Kirigiri jumping into the rubbish chute to save him, and was properly thwarted when both Kirigiri and Naegi showed up at the gymnasium to issue an ultimatum. She was forced to accept that a retrial is necessary, but then Enoshima - then still in Monobear form - decided to gradually reveal the whole truth to the students, confident that even if she was exposed, they would not be able to handle the shock of the outside world they longed to go back to having already "ended" due to The World's Most Despair-Inducing Incident.

During the final Class Trial, Naegi and Kirigiri deduce that Enoshima was the one pulling the strings the entire time and she was revealed to be the mastermind behind everything at the Academy.  She then confirmed the suspicion - one that emerged from the intense Class Trial debates - that she erased everyone's memories of the last two years so she could implement her plan to make the world suffer in despair. She then put a vote together to have students vote for the abstract ideas of "Hope" versus "Despair", where all but Naegi would live their lives out within the confines of the Academy if any one of the students chose "Despair", and Naegi alone will take a huge punishment - meaning he would have be subjected to Super Duper Nasty Torture if anyone would vote for despair.

However, Naegi reassured the surviving students of a future ahead despite the difficulties, and thus was able to convince all the students to vote for "Hope", condemning Enoshima to a final defeat in the climax of a Machinegun Talk Battle of "Hope" versus "Despair".

Though seemly livid over the results shortly after the vote was settled, Enoshima instead became perversely delighted as she tasted her own despair for once. She delightfully accepted her execution and death, but not before giving the remaining students the means to escape the Academy.

Aftermath
After she was executed, most of the members of the Super High-School Level Despair commited suicide. The remaining members hacked her body into pieces and attached those parts to themselves; one notable example was Nagito Komeda, who took her left hand and treated it as his own, despite it being non-functional.

Super Dangan Ronpa 2: Farwell Despair Academy
With the return of Monokuma to the island where the hopes have gathered, so did Enoshima as an AI, who infiltrated the virtual reality system and started her plan to destroy Future Foundation's plans as well as breed more despair. This plan, however, failed again thanks to the efforts of a repentant Hinata.

Execution
Main Article: Super Duper Nasty Torture

Well with this as basis I fairly concluded that all are accurate and well based on the definitions of being a Yandere. Might as well add, Yanderes snap because of the with holding pressure within them that are due to too much love and their loved ones reacting differently from what they perceived or want or imagined this people would be. Honestly this are defensive mechanisms because of being selfishly and wanting selfishly the attention of those people and failed on acquiring them in the same intensity, neither less or more. Therefore, having others judge us yanderes as psychotic, obsessive and other synonymous words.

Tokisaki Kurumi
Code Name: Nightmare
Anime: Date A Live

      Kurumi is the third spirit who appeared after Tohka and Yoshino. She has a split personality: that of a gentle, mysterous highschool girl with a slow talking pattern, and that of a psychopathic killer. She is very aggressive in her actions which makes it harder for Shidou to capture her.

      Mana reported that Kurumi Tokisaki is the most dangerousSpirit known, who has personally killed over 10,000 people which does not include the spacequake’s victims within that statistics.

      Kurumi Tokisaki using unstated and unexplained methods to personally transfer into Shido Itsuka’s High School and classroom so she can get closer to him. Her purposes and reasons in this transfer are simple; consume Shido Itsuka and his ability. She somehow knew about Shidou and his ability and the fact that he knows about the existence of Spirits.

APPEARANCE

      "A girl with astonishing beauty" as described by Shido. She appears to be elegant in some way and also has very good manners. She is a girl with black hair in long pigtails. Her right eye is red in color while her left eye is an inorganic clock face, with the clock hands moving in the opposite direction, representing her life.The Astral Dress she wears is made out of crimson and black frills, giving her the appearance of a Gothic Lolita.

PERSONALITY
      It’s hard to describe Kurumi’s personality because of her power, which is the ability to control time and create multiple copies of herself from different points in time. She can be a normal high school girl with a girlish personality at one time while at another time she can be a psychopathic killer. She does not have multiple personalities but she can have multiple pasts.

Powers & Abilities: Angel
Weapon: Clock, Hand Gun, Rifle

Skills: A Gun with Special Bullets that can activate different attacks or abilities depending on the Bullet

1. First Bullet: Aleph (Accelerated Time, aka super speed power on target object or subject)
2. Fourth Bullet: Dalet (Rewind Time on target object or subject)
3. Seventh Bullet: Zayin (Temporary Freeze Time on target object or subject)
4. Eighth Bullet: Het (Creates a clone of the target object or subject)
5. Twelfth Bullet: Yod Bet (Travel through time at the cost of a spirit’s power)

Astral Dress: Elohim

      Kurumi has the ability to manipulate the 4th dimension, mainly “Time”; but her main power is associated with shadow and controlling it. Shadow is her primary while Time is her secondary in terms of her usage, combined with the power of “Time” she can create the perfect shadow clone with all her experiences, memories, abilities, and etc. Her “Angel” is powerful but it also like a double edge sword, each time its (Angel) uses its abilities it consume a bit of her (Kurumi) Time (life). So, in order to get back her own time, she has the abilities to consume others “Time” to refill hers

TRIVIA

• Kurumi’s left eye represents her “Time” (lifespan). Each of the roman numeral in the “clock” also represents one different skills each, but only the original “Nightmare” is able to use all twelve. It is also hinted that each time she travels back in time after being killed, one of the skill from this “clock” is de-activated.
• She is the spirit that Mana Takamiya killed multiple times in the past, though those that Mana killed were actually just clones created by her angel, but with the price being sacrificing some of her time, so she began to take people’s time.
• Kurumi likes to wear black colored clothes. She wears black winter uniform when she goes to school and wears black gothic dress when she goes out.

SOURCE: http://someonepurpleblooded.tumblr.com/post/51856136114

APPEARANCE

            Yuno Gasai is a young girl with pink eyes and long pink hair that she wears in pigtails, two hanging as frontal locks featuring a pair of red bows, and the back pigtails are left bare. Her most common attire consists of blue shirt with a ribbon on her chest and blue skirt with high socks.

PERSONALITY


            Yuno's personality is an ambiguous one, for the most part she is a sweet, feminine and sometimes shy girl when around Yukiteru. This masked her darker side that is of a ruthless, cold and calculating psychopath who has little if any problem in using others for her ends, that is her and Yukiteru's survival. She will resort to cruel and mostly violent methods that most of the time end in bloody deaths, of either the Diary Holder or any follower, effectively making her a Yandere.

            However, she wasn't always insane. Her brutal personality is a result of circumstances surrounding her life, mostly the abuse she endured by her mother and the absence of her father, which finally ended with their deaths two years prior to the Survival Game. This was the beginning of her changes, as she later became quite lonely and sorrowful. So from the point onwards of when Yukiteru told her they would marry when they grew up, it was the pillar of support she needed, and her obsession for Yukiteru grew to escalating proportions. Willing to harm those whom she believes will take Yukiteru away from her, such as friends, etc. This goes to the point that she considered resorting to violence if Yukiteru's mother ever opposed her, which did not happen, and threatened to kill Tsubaki Kasugano, and immediately panicked that Yukiteru's friends Aru Akise, Hinata Hino, Mao Nonosaka and Ouji Kosaka would take Yukiteru away from her, forcing Yukiteru to calm her down and announce their "relationship", much to Yuno's joy and his own despair. In the third world, the third Yuno seemed to be very nice and calm possibly because she has love for her parents and there was no tournament for them and is no longer insane, although, as a side effect of receiving her 1st World self's memories, she still has an obsession with Yuki.

DIARY & ABILITIES

            Her diary is the Yukiteru Diary, which tells her everything about Yukiteru in intervals of ten minutes. While this means that her diary is basically useless by itself, if combined with Yukiteru's Random Diary that predicts Yukiteru's surroundings, it can cover Yuno's weakness and protect Yukiteru, making the two a fearsome duo.

            Even while the diary does not help her much by itself, Yuno can more than enough make for it with her great and cunning intelligence, which has saved both Yukiteru and herself in several times. She makes up most of the plans the duo uses to save themselves from the attacks of the other participants, as well as being able to quickly determine the weaknesses of certain diary users, like Yomotsu Hirasaka's blindness, or discover that Tsubaki Kasugano's followers were pretending to be dead to ambush them. She is also skilled in traps, seen when she booby trapped an abandoned hotel with multiple tools, such as electronic locks, concrete (gas in the anime) and even a sickle from an elevator (also in the anime). Her intelligence being her greatest asset. Although she possesses no real powers, Yuno has an uncanny sense of aim, and can use any small object as a deadly projectile. She has killed people with toothpicks, pencils, cards, and other ordinary objects, hurling them with fatal accuracy.

            Yuno is shown to be quite resourceful, using a shard of glass as a mirror to check the position of Minene Uryu during her bombing attack, as well as a pair of stones against Yomotsu to discover him amongst his copycats.

            Her perhaps most fearsome ability along with her great intelligence is her mastery skill in basically all types of weaponry, mostly blades, such as knives and axes, and during the attacks against Kamado Ueshita and John Bacchus, to be a skilled swordswoman, and using firearms such as a pistol and a machinegun with lethal proficency. She also is fairly acknowledgable of poison and drugs although she uses them in few times. She has also demonstrated to be quite skilled in infiltration, as she has in more than one occassion entered a building unnoticed even while it was protected by the police.

            Also despite her feminine appearance, Yuno has demonstrated impressive feats of physical strength mostly when angered, seen when she could free herself from two boys her age holding her in both arms, as well as free herself from two Omekata Cult members even when Tsubaki kissed Yukiteru and killed them too, even though she was severely weakened by the excessive amount of physical activity performed at that time. Also during the second attack against The Eleventh she was capable of slicing up a person in half with a katana.

            On top of all that, Yuno possesses godly powers from winning the first Diary Game. An example of such power is moving enormous structures through her will alone, such as when she tried to crush Yukiteru.

            All in all, those who have ever faced and lived to tell the tale, have acknowledged her as a fearsome opponent and can be considered one of the most powerful participants.

TRIVIA

• The characters of her last name mean "I" (我) and "wife" (妻), respectively.
  
• Yuno's birthday is November 16th.
  
• Her first name is based on Juno , the Roman goddess who was wife to Jupiter. Like her namesake, Yuno is extremely jealous of any woman who goes near Yukiteru.
  
• Yuno's "Yandere trance" at the end of Sign Up has become an internet meme, with internet users editing Yuno's face to look like other characters from numerous series.
  
• Yuno has three character theme song: The first is "RED Love " performed by Faylan; the second is "Happy Fate " by Matsui Yousei and sung by Choucho; and third, shared with Yukiteru, is "My Wish Lives in the Future ", sung by Yuno's voice actress Murata Tomosa.
  
• It is slightly foreshadowed in both openings that Yuno had killed herself.
  
• Yuno's shares many characteristics with Bullseye from Daredevil, as both have abusive parents, attempted to kill their parents, are proficient in firearms and marksmanship, and are homicidally violent.
  
• Yuno was a contestant of the International Saimoe League's 2012 season.
  

SOURCE: http://futurediary.wikia.com/wiki/Yuno_Gasai