Neku awakens in the middle of Shibuya's bustling Scramble Crossing with no memory of how he got there. Little does he know, he's been transported to an alternate plane of existence known as the Underground. Now an unwilling participant in the mysterious "Reapers' Game," Neku must partner up with a girl named Shiki in order to survive...
Souhei Saikawa is a college professor who is obsessed with genius Shiki Magata’s work. He, Moe Nishinosono, and a group of his other students plan a retreat to the remote island where Magata currently resides, which may put them in danger’s way...
Miyako Arata is newly assigned to the Shinjuku Ward Office's Nighttime Regional Relations Department. Each of Tokyo's 23 wards has one such department, established to mitigate paranormal and occult-related events. Arata's special skill is the understanding of non-human speech, and the story begins with him encountering a youkai at Shinjuku Gyoen park who refers to him as the legendary Heian-era exorcist, Abe no Seimei.
The story takes place at a certain middle school where several murder cases take place. Kobayashi, a boy who goes to this school, meets genius detective Akechi, who comes to the school to investigate. Kobayashi takes an interest in Akechi and, in spite of his friend Hashiba's worries, he volunteers to be Akechi's assistant.
So long as people have hearts, there will be those with worries and concerns. Those hearts are then invaded by something strange, causing them to show strange physical symptoms. These ailments, called "mysterious diseases", exist unseen to most people. Modern medicine offers no cure, but there is one doctor who fights these diseases along with his pupils. His name is Ramune. He looks nothing like a doctor, is foul-mouthed, and does whatever he pleases, but he has the ability to pinpoint the cause of the troubles hidden deep within his patients' hearts and cure their mysterious diseases.
It was just a usual morning.
Akira Shiroyanagi, a high schooler who loves games and Konpeito (Japanese sweets), has suddenly been dragged into a battlefield by a mysterious girl who calls herself Mion. The participants are told that they are "erased from the family register, involved in an experiment, and gained certain powers."
Akira is determined to win the game with his newfound powers and destroy the organization. Armed with a power no one expects and his "brain" skills, the new period of intelligence battle begins!
Six months ago, Lord Hugh Disward (Huey), lost his eccentric grandfather, Wes. To inherit Wes's estate, Huey must take guardianship over the 'Mystic Archives of Dantalian' that contains forbidden knowledge and a mysterious girl called Dalian. Dalian and Huey begin an unlikely partnership as they solve mysteries caused by Phantom Books.
Mayumi Dojima, a second-year student at the exclusive Yubiwa Academy middle school, has lost something—a star she glimpsed just once, ten long years ago. But help is on the way, in the form of the unofficial, secretive, and thoroughly mysterious Pretty Boy Detective Club! Rumored to solve problems within the school (most of which they themselves might as well created) for reasons aesthetic rather than financial, these five gorgeous boys sweep Mayumi into their world of excitement, danger, and overwhelming beauty.
Four students of the same age have nothing in common except that they attend the same elite New York City school. Kate, Rose, Claire and Rachel all belong to different cliques and hardly notice each other's existence. Then one day they gain something in common, something very important, something mysterious. They find themselves drawn together by the death of a fellow student and the secret of their own missing memories. Suddenly they are thrown into a world of hidden warfare on the city streets and are caught up in secrets which would not be believed by others. These four all have their own problems to struggle with, things that seem more important than such strange conflicts. Can they escape from this fate? The only thing they know is that despite coming from four different worlds they now have to rely on each other or die without a hope.
One night, a college student with a strong sense of justice, Seigi Nakata, saved a gorgeous foreigner, Richard, who was being harassed by some drunks. When Seigi found out that Richard was a jeweler, he asked for an appraisal on a ring with a shady history; one which his grandmother had kept secret until she died. The appraisal had revealed her past, truth, and desire. It led Seigi to work as a part-time employee for Richard's jewelry store, the "Jewelry Etranger" in Ginza. While solving various "mysteries", the relationship between Richard and Seigi gradually changes.
A shady bus tour of young men and women are headed to an elusive village called Nanakimura. A destination where people can partake in an utopian existence, free of the world's obstacles... or so goes the rumor. Heading deep into the mountains, the bus is carrying 30 different individuals, each harboring their own expectations and troubled hearts... What they had arrived to was an uninhabited village with lingering, faint scents of life and it was falling apart. Just what is the secret of Nanakimura?
Takumi Nishijou, a high school student at the Private Suimei Academy, one day hears about the 'New Gen' murders that have been occurring around the city. Although dismissing the subject because it doesn't involve him, Takumi begins to experience strange mishaps around him, from a horrific picture he received while on his PC, to a mysterious Pink-Haired girl standing at a murder scene.
From there on Takumi struggles to cope with the events unfolding around him, and is soon unaware of what is real or a delusion. As his fate opens up before him, the perpetrator behind the 'New Gen' events attempts to find him, leading him into a world where nothing is as it seems.
A girl inherits a company that is almost bankrupt from her late father. Lacking the funds, she must now become the producer herself in order to save the company from collapse. During her work, she meets four boys—financial expert Zen, the idol Kira, police officer Haku, and leading neuroscientist Simon—and is suddenly involved with the conspiracies and mysteries over the existence of special powers known as "Evol."
Ritsuka Tachibana is a female second-year high school student who attends Shiko Academy in Shiko Town. She enjoyed her school life while living with her mother Maria, but one day, that balance fell into ruin when she discovers several of her attractive, male classmate are demons.
Urashima, an island far from the mainland. The people who live there lead carefree lives. But five years ago, the island's three great families suffered a series of misfortunes, and succumbed to suspicion. The people of the island cut off all contact with the mainland, and began a slow decline. The key to saving the island lies in three girls who belong to the three families. But they are bound by old traditions, and are conflicted. On that island, a lone man washes ashore. The man claims to be from the future, and he begins a solitary struggle to change the island's fate.
ChäoS;Child takes place in October 2015, six years after the events of ChäoS;HEAd. Abnormal events begin to occur in Shibuya district, including mysterious deaths.
In 2050 engineer Derrida Yvain is famous for his contribution to "Autonomous Machine DZ," at his father's company, Rebuild. But when he and his colleague Nathan discover a dangerous flaw in their creation, their warnings go ignored. The next day after Nathan's daughter Mage's birthday party, the group barely escapes an attack by unknown forces, leading to Derrida's unwitting captivity in cryogenic stasis. Ten years later, he emerges in a world at war with the mechanical lifeforms he helped create. Now, he fights to survive his nightmare future to make good his promise to "Take care of Mage."
The story takes place in Shibuya. Ryuhei had always looked up to his older brother as a child. Even after witnessing his mysterious death, Ryuhei grows up to be a cheerful high school student. One day after his daily kickboxing practice, he is bitten by a strange creature calling itself Tris. That night, an unusual dream bothers his sleep. As the rumored "Drops" circulate around the city, Ryuhei is confronted with a force of twisted desire. What is it that awaits him beyond that?
Shy bookstore clerk Kosuke Mikado has the ability to see ghosts and spirits, an ability he wishes he didn't have, since what he sees usually terrifies him. Rihito Hiyakawa, an exorcist whose supernatural powers are as strong as his social graces are weak, doesn't seem to fear anything, mortal or otherwise. When this odd couple gets together to solve the bizarre cases that come their way, their work methods may not be entirely safe for work!
Nai searches for someone important to him, with only an abandoned bracelet as a clue. Gareki steals and pick-pockets to get by from day to day. The two meet in a strange mansion where they are set-up, and soon become wanted criminals by military security operatives. When Nai and Gareki find themselves desperate in a hopeless predicament, they encounter none other than the country's most powerful defense organization - "Circus"!!