Synopsis
After being rejected by her classmate on the last Christmas of high school, a girl finds herself transported six months back in time.
Episodes
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An animated adaptation of six classical Japanese literature pieces, including No Longer Human (Ningen Shikkaku) and Run, Melos (Hashire, Melos) by Osamu Dazai, Kokoro by Natsume Souseki, Hell Screen (Jigoku Hen) and The Spider's Thread (Kumo no Ito) by Ryunosuke Akutagawa and In the Forest, Under Cherries in Full Bloom (Sakura no Mori no Mankai no Shita) by Ango Sakaguchi.
Aoi Bungaku Series

Takemichi Hanagaki is a freelancer that’s reached the absolute pits of despair in his life. He finds out that the only girlfriend he ever had, in middle school, Hinata Tachibana, had been killed by the ruthless Tokyo Manji Gang. The day after hearing about her death, he’s standing on the station platform and ends up being pushed over onto the tracks by a herd of people. He closes his eyes thinking he’s about to die, but when he opens his eyes back up, he somehow had gone back in time 12 years. Now that he’s back living the best days of his life, Takemichi decides to get revenge on his life.
Tokyo Revengers

Rishe, the duke’s daughter, is no stranger to reincarnation—it’s her seventh life, after all. Each life restarts at her broken engagement. Having been a merchant, a maid, and a knight, she now desires leisure. But her world changes when a prince, who killed her in a past life, proposes! To prevent war and live to a ripe old age, she begins her seventh life as the bride of an enemy nation’s prince.
7th Time Loop: The Villainess Enjoys a Carefree Life Married to Her Worst Enemy!

Jinta Yadomi and his group of childhood friends have become estranged after a tragic accident split them apart. Now in their high school years, a sudden surprise forces each of them to confront their guilt over what happened that day and come to terms with the ghosts of their past.
Anohana: The Flower We Saw That Day

Oz Vessalius, heir to one of the duke houses, has just turned fifteen. His life is rich and carefree, darkened only by the constant absence of his father. At his coming-of-age ceremony, however, everything changes. For no reason that he can discern, he's cast into the prison known as the "Abyss", only to be saved by a "chain" known as Alice, the bloodstained black rabbit. It is unknown why was he cast into Abyss, how does Alice factor into it all, and what does the organization known as "Pandora" want with him.
Pandora Hearts

There is an urban legend that tells of a shinigami that can release people from the pain they are suffering. This "Angel of Death" has a name—Boogiepop. And the legends are true. Boogiepop is real. When a rash of disappearances involving female students breaks out at Shinyo Academy, the police and faculty assume they just have a bunch of runaways on their hands. Yet some students know better. Something mysterious and foul is afoot. Is it Boogiepop or something even more sinister...?
Boogiepop and Others

Orphen is a powerful sorcerer who is notoriously lazy. Everything changes when he finds a way to save his sis, who was turned into a dragon during their days at magic academy. Betrayed by friends who refused to help, Orphen will stop at nothing to track her down, even if he has to go it alone.
Sorcerous Stabber Orphen

On Christmas Eve, Hiro Hirono meets a girl named Miyako Miyamura as she chases a purse snatcher. Hiro later finds out that Miyako also goes to the same school as he does and they start hanging out together. This makes Hiro's childhood friend, Kei Shindō, feel left out, so she tries to compete with Miyako for Hiro's affection, creating a love triangle. Meanwhile, Renji Asō meets a girl named Chihiro Shindō at an abandoned train station. He soon learns that Chihiro suffers from a type of amnesia where her memory lasts for only 13 hours. He also discovers Chihiro's dream of writing a novel, but she has never been able to fulfill that dream due to her condition. Renji then decides to help her fulfill that dream.
Ef: A Tale Of Memories & Melodies

Hashiba Kyouya is a 28-year-old game developer. With his company going bankrupt, and him losing his job, he returns to his hometown. Looking at the success of creators of his age, he finds himself regretting his life decisions as he lay distressed on his bed. As Kyouya wakes up, he discovers that he has traveled ten years back to the time before he entered college. Will he be able to finally make things right?
Remake Our Life!

Jinta journeys through a century-spanning epic, all while questioning why he wields a sword.
Sword of the Demon Hunter

The story centers on Keitarou Gentouga, who has the ability to be a spirit medium. In junior high school, he got someone else wrapped up in a spirit possession incident, and he has been a shut-in for more than two years. As he reintroduces himself to society as a private tutor, he meets a genius girl named Yayoi Houzuki. Yayoi is instantly able to tell that Keitarou has skill as a spirit medium, and she invites him to go with her to a haunted location. The two then start their journey capturing evil spirits.
Dark Gathering

Banri Tada is a freshman at a Tokyo law school. After an accident, he suffers severe memory loss. Despite the incident, he befriends fellow freshman, Mitsuo Yanagisawa, which leads him to the beautiful, yet obsessive, Kouko Kaga.
Golden Time

Eccentric Rintaro falls into a depression after failing to save Kurisu, but then a neuroscientist offers him the chance to interact with an AI copy.
Steins;Gate 0

Kobato decides to become an honest, humble citizen after enduring a bitter experience known as “wisdom work.” He forms a pact with Osanai, his classmate with the same goal, and they plan to enter high school leading quiet lives. But for some reason, inexplicable events and disasters keep happening around them. Will Kobato and Osanai ever manage to live ordinary, peaceful lives?
SHOSHIMIN: How to Become Ordinary

A story about Kino, who travels around the world with nothing but guns for protection and the talking motorcycle Hermes. Kino travels to many mystical worlds, each with its unique customs and people, and learns about the world through their stories, at times conjuring humor and inspiration or other times piercing cynicism. However, Kino's own custom is to stay no longer than three days in every town without exception, as it is enough time to learn almost everything important about the place while still leaving time to explore new lands.
Kino's Journey -the Beautiful World- the Animated Series

The amazing Taichi Keaton works on cases around the globe that always lead to adventure! He combines his arsenal of multidisciplinary expertise in investigation, archeology, and survival with his experience as a professor, a Falklands Conflict veteran and a SAS agent to unravel the often dangerous challenges in each riveting episode.
Master Keaton

One evening in fall, with one month left before the school festival, the last member of the ruined light music club, Haruki Kitahara, looks out the window and plays his guitar in the direction of the festival stage set up outside. This was the simple little adventure that the conscientious honor student had hoped for two and a half years to achieve before his graduation in half a year. But then, when a flowing piano melody and a bell-like singing voice joined the clumsy sound of his guitar...
White Album 2

Set in a fictional European country in 1924, a Japanese exchange student meets a mysterious, brilliant girl who only leaves the library to sleep. Her brother, a detective, relies on her exceptional mind to solve difficult mysteries.
Gosick

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.
Orange

Nearly half the population of Sakurada, a small town near the Pacific Ocean, has some sort of unique power. These powers range from being able to enter the mind of a cat, to resetting the world back to a certain point in time in the past. There is a group known as the "Kanrikyoku" that controls and monitors the use of these powers. Asai Kei and Haruki Misora work for their school’s club called "Houshi" club, which execute any missions received from the Kanrikyoku. Misora has the ability to reset the world 3 days. This means that all events and any memory of the past 3 days that "could have" happened, never happened. Kei has the ability to "remember" the past. Even after Misora uses her powers to reset the world back 3 days, Kei will retain those 3 days in his memory. Combining their powers, these two solve missions issued by the Kanrikyoku.