The fierce Desert Eagle coated in scarlet. The unstoppable Laughing Red Tigress. Humanity's Strongest: Jun Aikawa. Renowned for her prowess in anything and everything, Jun is the most powerful person in the world. Her occupation is that of a contractor and will take any job, no matter how trivial or illegal it may be, so long as money is involved. Those that call her by her last name are considered her enemies, thus she insists friends to refer to her as Jun. Her abilities are practically limitless as a Multidisciplinary Master. Ii and Jun initially meet by pure chance and their fates become intertwined.

With a strong sense of justice and a wild personality, Jun can be a lot to handle for the average person and especially Ii. He is particularly bothered by Jun's hatred for leaving things half-assed. On top of that, Jun is a rather arrogant individual. Despite this, she does value her friends and trusts them greatly. A majority of the people that hear her name fear it, as many over-the-top stories exist about her feats. Though some of the said feats may be completely wrong, Jun is a very intelligent woman and is considered to be a genius among geniuses. 

As Jun is known both for her abilities and her mind that is like no other, she is said to be Humanity's Strongest. Being the Multidisciplinary Master,  she is a master of disguise, sound imitating, lock picking and mind-reading. Not only that, but Jun also has amazing fighting capabilities, which are nearly impossible to overcome. ~!When Hitoshiki Zerozaki and Jun fought, she admitted that he was a bit tough even for her and that his skill with knives was second to none. Hitoshiki managed to get away without a scratch, though it wasn't easy.!~ ~! The origin of Jun isn't pretty, as she is the product of incest. Initially, Takashi Saitou, her biological father, wished to create the strongest human. He, along with Akira Kajou and Junya Aikawa, created Jun, with one of Jun Saitou twins as her mother. Jun was later abandoned as she was deemed a failure by Takashi. Of her three fathers, Junya Aikawa was the only one she could consider as a father.!~

A dropout from an elite Houston-based program for teens is on a visit to a private island. Its mistress, virtually marooned there, surrounds herself with geniuses, especially of the young and female kind—one of whom ends up headless one fine morning.
 
(Source: Kodansha USA)

It's the vacation of a lifetime, a trip to a remote island filled with geniuses–and murder. 
 
On Wet Crow's Feather Island, a tiny speck in the Sea of Japan, lives Akagami Iria, the exiled daughter of a powerful family. Born into great wealth, she was a princess of the highest pedigree–until she was cut off by the leader of the Akagami Foundation. For the last five years, she's lived on Feather Island with her maids. But she hasn't been alone. She has invited the best minds Japan has to offer to come and stay with her. 
 
And so nineteen-year-old college student Ii-chan and his best friend, computer genius Kunagisa Tomo, find themselves as Iria’s guests at her elaborate mansion. Surrounded by fascinating women – a chef, a fortune-teller, a scholar, and an artist, not to mention his own friend Tomo – Ii-chan is feeling a little overmatched intellectually. But the sudden discovery of a grisly murder sends the island into shock. And Ii-chan discovers that he does possess a bit of genius: the ability to discover what is real and what is fake, who is who they claim to be and who is a killer. 
 
(Source: Del Rey Manga)

__Birth Place:__ Kanagawa, Japan

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What if Monogatari's Ararararagi, Zaregoto's Ii and Jun "Humanity's Strongest" Aikawa, and Okitegami Kyouko no Bibouroku's titular forgetful detective all attended school together? In 2002, NisiOisiN won a Mephisto Prize prize for his debut novel Zaregoto, Book 1: The Kubikiri Cycle. Part of the 15th anniversary celebration will be 4-panel crossover gag manga Seishun Kijin-den! 240 Gakuen (240 is a pronunciation pun - 240 can be read as "Nishio," so "Youth Oddball Story! Nisio Academy"). 
 
(Source: Crunchyroll)

Iori is a high school girl who doesn't know what she wants to do with her future, and tends to run away from things. One day, she is attacked by strange dead-eyed people on her way to school, only to be saved by an equally mysterious long-haired man. Later that day, her friend at school, Jion, seems to fall under the same murderous influence. To her surprise, she finds herself capable of defending herself from his violent attack. Afterward, the long-haired man she met in the morning, Zerozaki Soushiki, arrives once more, this time to invite her to become his little sister. What has Iori become involved with, and will she be able to survive this change to her life?


The first instalment of the Saikyou Series.
 
Lonely Red, Aikawa Jun.
 
Her "now" is told.
 
The "Strongest" series begins!
 
"Argh, it's so boring. I should just kill myself."
 
Aikawa Jun, Humanity's Strongest Contractor.
 
She has become too strong, and the entire world surrenders to her at last. The contractor no longer has enemies to defeat, no requests to fulfil. But that's when love strikes for the first time! The most powerful love story that transcends the restraints of humanity. The strongest love story in the world!
 
(Source: Kodansha, translated)

A series of crossover stories between characters from Monogatari and characters from Nisio's other works. Originally, 4 crossover short stories were released during the theatrical screenings of each Kizumonogatari movie. The stories were bundled up into Mazemonogatari, and included 3 unreleased stories. 
 
Includes 15 stories: 
Kyouko Balance 
Jun Build 
Nomi Rule 
Mayumi Red Eye 
Kuroneko Bed 
Risuka Blood 
Hitei Clear 
Iori Fugue 
Shiogi Ranger 
Akari Triple 
Rizumu Rock 'N' 
Mikoko Community 
Kuu Invisible 
Rai Roulette 
Magakoro Finisher

Third ranking of the Killing Names of The Violence World, the Zerozaki Clan is infamous for their indomitable family unity. Each of its members exhibit combat prowess when it comes to saving one of their kin. Kishishiki Zerozaki is one member of the Zerozaki family, utilising a bat covered in nails to brutally murder his targets. He calls his weapon "Seamless Bias (Foolish Praise)". 
 
His next target was supposed to be just like any other target, though he was forced to bring Hitoshiki Zerozaki with him as a learning experience. It was supposed to be a standard mission, but now he faces a problem when he discovers that he has become prey to a formidable tactician and a ruthless berserker.

The forefront of new youth entertainment! "Now then, let's commence the Zerozaki"
 
The Zerozaki Clan is a family of demonic killers, ranked third among the Killing Names. The eldest brother whom is a leader of the clan is the user of Suicidal Tendencies (Mind Render)—also known as the Twentieth Hell—Soushiki. What awaits him on the other side of the breathless turmoil......?! The forefront of new youth entertainment is here!
 
(Source: Kodansha, translated)

Now that he’s a cool college student, our anti-hero Iichan thinks his crime-solving days are behind him. Cynical, sarcastic and minimally engaged in his studies, Iichan is much more interested in his own feelings of disaffection and isolation. But despite his resolve to remain aloof, he’s pulled into the narrative when he encounters and bonds with a serial killer named Hitoshi Zerozaki – a homicidal maniac with the soul of an artist whose talent is on display at the grisly scenes of his crimes.
 
(Source: Kodansha USA)

An earnestly honest guy who doesn’t even grant pipe dreams to himself, physiologically incapable of letting a single contradiction go, in other words me, got dragged this June to a renowned academy for rich girls, no questions allowed, by the world’s strongest contractor. No matter how you put it, no matter how you spin it, there was probably no point to it. Because the case that arose there was, in and of itself, a bit of nonsense.
 
(Source: Kodansha USA)

Tomo, Neon, Ii, Kyouichirou, Shito, Misachi, Kokoromi, Kasugai, Gaisuke, Jun, Kouta, Houko, Nanami
Dead Blue (Tomo Kunagisa) ——is desperate!
 
"You actually hate Tomo Kunagisa, don't you?" 
The genius engineer and former member of Tomo Kunagisa's Team, Gaisuke Utsurigi, is being held captive at a mysterious research facility—Kyouichirou Shadou (Mad Demon)'s Research Institute. Accompanied by her friend Ii—aka the Nonsense User, Iichan—are on their way to rescue Utsurigi, but are met with a horrifying "scene" that unfolds before their eyes. However, this "end" is only a taste of the "beginning" to come——!
 
(Source: Kodansha, translated)

The No. 1 Killing Name, "Niounomiya", has finally arrived!
 
".....Specifically, what are you researching, Assistant Professor
Kigamine?" 
"——Researching not dying."
 
Invited to monitor the bizarre research on Kuchiha Madoka—a girl who lives eternal—Ii, the Nonsense User, visits the ruins of a clinic in northern Kyoto with antique apartment dwellers Ichihime Yukariki and Kasuga Kasugai.
 
However, what awaits them there is a terrible "fate" itself!
 
The Niounomiya siblings, the number one killers in the world, make their debut in this exciting new coming-of-age story.
 
(Source: Kodansha, translated)

It may be true that where there is a beginning, there is an end, but it is too shortsighted to think that because there is an end, there must have been a beginning. In fact, the opposite is true. Most events have already ended even before they began, and they are closed even if they are not opened. I, a sincere and honest person who dares not speak truth as truth, dares not speak fact as fact, and knows the virtue of silence better than anyone else, will ascend a certain staircase in September. The Thirteenth Staircase. It was Kino-Raichi, Noise, Emoto Sonoki, Mio-tsukushi Takami, and Mio-tsukushi Misora. However, what awaits me at the top of the stairs is so ridiculous and so nostalgic… in this sixth installment of the "Zaregoto" series!
 
(Source: Kodansha, translated)

Let's commence the Zerozaki, cha.
 
The most crude and merciless demonic killers fight to the death.
 
The Zerozaki Clan is a family of demonic killers, ranked third among the Killing Names. Zerozaki Kishishiki, the user of a bat covered in nails known as "Seamless Bias (Foolish Prayer)". One after another, elite Killing Names enter the field. What lies at the end of this deadly battle? The forefront of new youth entertainment is here!
 
(Source: Kodansha, translated)

"It might not be bad to commence the Zerozaki."
 
The strongest "Sound User" appears.
 
The Zerozaki Clan is a family of demonic killers, ranked third among the Killing Names. Zerozaki Magashiki, known as "Girly Tastes (Bolt Keep)", senses a danger creeping up on the clan and finally appears on the stage. What will happen to the unity of the clan? The battle of the "sound user", Zerozaki Magashiki, begins now! The forefront of the new youth entertainment is here!
 
(Source: Kodansha, translated)

The Zerozaki Clan is a family of demonic killers, ranked third among the Killing Names.
 
Having just become siblings, Zerozaki Hitoshiki and Mutou Iori attack Aikawa Jun—Humanity's Strongest Contractor—with the best intentions. But, as a result, get caught up in her work! They're headed towards the domain of the second-ranked Killing Names, the Yamaguchi Folks, on the island of Taiyakujima. Therein lies the Lifelong Undefeated Crystal Kaiser, Rikka Kajumaru.
 
(Source: Kodansha, translated)

The Zerozaki Clan is a family of demonic killers, ranked third among the Killing Names.
 
A boy with eyes like that of a dead man and a serial killer with a tattoo on his face. The story of their encounter and the never-before-told truth of the Kyoto serial killer case is finally revealed! The motivation of Zerozaki Hitoshiki, and its miserable ending......?!
 
(Source: Kodansha, translated)

The third instalment of the Saikyou Series.
 
Aikawa Jun, Humanity's Strongest Contractor. At the request of Nagatoro Toromi, she sets out for a newly-born volcanic island. What does Aikawa Jun have to compete for survival with? Plants?! A spectacle of the "strongest", sprouting from "nonsense", and growing beyond "human"!
 
(Source: Kodansha, translated)

The second instalment of the Saikyou Series.
 
Aiming for 10,000 metres depth in the deep sea!
 
Together with the genius psychologist Jikumoto Miyori, Aikawa Jun—a contractor—heads to the bottom of the sea in pursuit of a missing treasure ship and research team. As soon as they arrive, they are besieged by a school of man-eating fish!
 
(Source: Kodansha, translated)

The fourth instalment of the Saikyou Series.
 
Aikawa Jun, Humanity's Strongest Contractor. This time, she's been asked to protect the fortune teller's child, Himena Genki, from the "death" she predicted. What is the strongest way to change the future? An adventure story about falling in love with "nonsense", loving "humans", and being thrilled by "the strongest" comes to a close!
 
(Source: Kodansha, translated)

The fifth instalment of the Saikyou Series.
 
The most strongest heroine in 10,000 years.
 
Aikawa Jun, a famous detective and Humanity's Strongest Contractor.
 
A non-stop mystery about two beautiful women and a serial killer.
 
Don't interfere with my journey. I'll kill you.
 
Aikawa Jun, Humanity's Strongest Contractor.
 
She is assigned to accompany Jikumoto Miyori, a nineteen-year-old authority on psychology, on a field investigation.
It was supposed to be a fun trip with the addition of the overly perfect maid, Handa Rei. However, at their destination in Venice, a couple of tourists and famous actresses are brutally murdered one after another via drowning.
 
The "drowned killer" has his claws on these women, too—?!
 
(Source: Kodansha, translated)

The 10th instalment of the Zaregoto Series announced in the 20th-anniversary video for Nisio works. 
 
Kunagisa Jun is Ii-chan and Tomo's daughter, an "ordinary" 15-year-old attending Sumiyuri Academy. One day, Aikawa Jun kidnaps her and brings her to the Kunagisa Organization, where she happens upon a grisly murder. 
 
(Source: Amazon JP, translated)