Satoru Fujinuma is a struggling manga artist who has the ability to turn back time and prevent deaths. When his mother is killed he turns back time to solve the mystery, but ends up back in elementary school, just before the disappearance of his classmate Kayo.
A group of friends have customized their microwave so that it can send text messages to the past. As they perform different experiments, an organization named SERN who has been doing their own research on time travel tracks them down and now the characters have to find a way to avoid being captured by them.
Surrounded by a forest and a gated entrance, the Grace Field House is inhabited by orphans happily living together as one big family, looked after by their "Mama," Isabella. Although they are required to take tests daily, the children are free to spend their time as they see fit, usually playing outside, as long as they do not venture too far from the orphanage — a rule they are expected to follow no matter what. However, all good times must come to an end, as every few months, a child is adopted and sent to live with their new family... never to be heard from again.
However, the three oldest siblings have their suspicions about what is actually happening at the orphanage, and they are about to discover the cruel fate that awaits the children living at Grace Field, including the twisted nature of their beloved Mama.
Hatori Chise has lived a life full of neglect and abuse, devoid of anything resembling love. Far from the warmth of family, she has had her share of troubles and pitfalls. Just when all hope seems lost, a fateful encounter awaits her. When a man with the head of a beast, wielding strange powers, obtains her through a slave auction, Chise's life will never be the same again.
The man is a "magus,"a sorcerer of great power, who decides to free Chise from the bonds of captivity. The magus then makes a bold statement: Chise will become his apprentice--and his bride!
When Kouichi arrives at his new school, he immediately senses something frightening in the atmosphere of his new class, something that no student wants to talk about and that seems to be related to a mysterious and silent girl.
Young Tatsumi travels to the capital of the Empire in order to earn money for his starving people and encounters a world of unimaginable depravity, dominated by the ruthless Prime Minister who controls the child Emperor. Tatsumi is recruited by Night Raid, a group of assassins dedicated to eliminating corruption by mercilessly killing officials and privileged nobles.
Naruto Uzumaki, a mischievous adolescent ninja, struggles as he searches for recognition and dreams of becoming the Hokage, the village's leader and strongest ninja.
The Diclonius, a mutated homo sapien that is said to be selected by God and will eventually become the destruction of mankind, possesses two horns in their heads, and has a "sixth sense" which gives it telekinetic abilities. Due to this dangerous power, they have been captured and isolated in laboratories by the government. Lucy, a young and psychotic Diclonius, manages to break free of her confines and brutally murder most of the guards in the laboratory, only to get shot in the head as she makes her escape. She survives and manages to drift along to a beach, where two teenagers named Kouta and Yuka discovers her. Having lost her memories, she was named after the only thing that she can now say, "Nyuu," and the two allow her to stay at Kouta's home. However, it appears that the evil "Lucy" is not dead just yet...
Nana Osaki is a guarded and ambitious young woman with a strong will and a rough past. She is the vocalist for a punk band called Black Stones and she desires fame and recognition more than anything else. Nana Komatsu is an outgoing and flighty young woman with a weak will and a stable past. Her life revolves around her desire to find love and marriage. The two meet for the first time while traveling to Tokyo - in pursuit of their respective dreams - and they later decide to be roommates. Although drastically different people, the two become very close and together they find out if their biggest dreams have room for their best friend.
Hiyori Iki is a normal middle school student until she was involved in a bus accident while trying to protect a stranger. This incident causes her soul to frequently slip out of her body, and she becomes aware of the existence of two parallel worlds. Through her soul, she meets the strange, nameless god without a shrine, Yato. Yato is determined to make a name for himself out there by accepting any wishes for 5 yen, including Hiyori's to fix her body.
When Yadomi Jinta was a child, he was a central piece in a group of close friends. In time, however, these childhood friends drifted apart, and when they became high school students, they had long ceased to think of each other as friends.
One of the friends from that group, Honma Meiko, now has a wish she asks Jinta to fulfil. The problem is, she can't remember what her wish is anymore.
In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...
In the city of Oedo 2808 A.D., three Cyber criminals are given two choices, to either rot in jail or to join a special force of the Cyber Police to possibly get one more chance at freedom. For each criminal apprehended, and for each successful mission done, the state will agree to reduce their sentences. Lead by Hasegawa, the new recruits: Sengoku, Gogul, and Benton will bring some hard justice to Oedo, and possibly taste freedom once again.
A supernatural system allows people to take revenge by having other people sent to Hell via the services of a mysterious entity and her assistants who implement this system. Revenge, injustice, hatred, and the nature of human emotions are common themes throughout the series.
Unable to remember the past, high school senior Saya Otonashi must rediscover her destiny in order to defeat the chiropteran vampires that threaten her loved ones' existence.
Lain—driven by the abrupt suicide of a classmate—logs on to the Wired and promptly loses herself in a twisted mass of hallucinations, memories, and interconnected-psyches.
One morning, the high school student Takashi Komuro enjoys the silence at school when he's suddenly interrupted by strange noises and a shaky-legged person who tries to enter the school grounds. Subsequently, several teachers come to the school gate to shoo the person away. All of a sudden, a teacher is bitten by the person and within seconds the school campus becomes a place of violence, blood, death and undead zombies. Takashi, shocked by the scenery, runs for his life to save his schoolmates and childhood love, Rei Miyamoto. The struggle for survival has just begun…
Narumi is certain that Masaru will be kidnapped by wooden puppets with supernatural strength after fighting them with all his strength. Masaru inherited his father's wealth which has brought many enemies out of the shadows, too many for Narumi to defend him alone. When Narumi is feeling discouraged, Masaru's watcher, Shirogane, arrives with a powerful weapon, the puppet Arlequin.
Kobato is a girl who came to earth to fulfill her wish, which is to go to a certain place. To fulfill that wish, she has to find a bottle and fill it with scarred hearts. Together with her "teacher", which is a stuffed animal, she search for the scarred hearts. However she may not fall in love with any person whom she cures the heart of.
One day, Naho Takamiya receives a letter written to herself from ten years in the future. As Naho reads on, the letter recites the exact events of the day, including the transfer of a new student into her class named Kakeru Naruse. The Naho from ten years later repeatedly states that she has many regrets, and she wants to fix these by making sure the Naho from the past can make the right decisions—especially regarding Kakeru. What's more shocking is that she discovers that ten years later, Kakeru will no longer be with them. Future Naho asks her to watch over him closely.