Here’s a short, Christmas-themed indie ONA from 2019. It was made by Junya IWAKE (井分詢也).

"I'm going to live for myself!" The greatest assassin on Earth knew only how to live as a tool for his employers—until they stopped letting him live. Reborn by the grace of a goddess into a world of swords and sorcery, he's offered a chance to do things differently this time around, but there's a catch...He has to eliminate a super-powerful hero who will bring about the end of the world unless he is stopped. Now known as Lugh Tuatha Dé, the master assassin certainly has his hands full, particularly because of all the beautiful girls who constantly surround him. Lugh may have been an incomparable killer, but how will he fare against foes with powerful magic?

The story takes place in Nikko city, Tochigi Prefecture, where girls aim for the top of the world through ice hockey. Local junior high school student Manaka and her younger sister Ayaka, whom she forcibly invited, hit the gate of first-hand experience with ice hockey, held by the Nikko-based team Dream Monkeys. The two are joined by their childhood friends Kaoruko and Mami. As the girls practice, they become fascinated with ice hockey and eventually join the team.

13 year-old girl Hyunjuli participates in a children’s Korean traditional play rehearsal in Changdeokgung Palace and accidentally falls into another world – the Moonlit Palace. The Moonlit Palace is a fantasy world of mysterious spirits and gods, where a dragon or talking mushrooms are nothing out of ordinary. Meeting new friends, Mr. Squirrel and the warrior Won, Hyunjuli explores this strange yet wonderful world to find a way back home. However, due to the trick of the Blossom Lady, who tries to rule this Moonlit World, Hyunjuli and friends fall into trouble. Will Hyunjuli be able to help her new friends to save their world and return home safely?

In the story of the anime, one day a black meteorite fell on the world, and the world completely changed. The meteorite produced grotesque monsters called D2, which started running rampant. D2 very quickly banned all music, which was the one thing able to overcome them. But there were some people who resisted the D2. They are young women who hold the power of music, the "Musicart." These young women hold "scores" that are able to defeat the monsters. And there are also people who lead these women, the Conductor. The anime takes place in America in the year 2047, which has fallen to ruin thanks to the D2. Takt, a Conductor, is partnered with a Musicart named Unmei. Takt yeans for music to be returned to the world, and Unmei wishes to destroy the D2. Their aim is to travel to New York.

Yuangong, the deacon, opens the shrine and exposes the holy book to the human world. He also carves the contents of the book on the stone wall of white cloud cave in the mountains. He is then punished by the Jade Emperor to guard the book for life for breaking heaven's law and betraying the holy secret to humankind. In order to pass this holy book to human beings, he must get by the antagonist fox.

"Seiichi Hiiragi is an ugly, revolting, dirty, smelly fatass"—these are the insults hurled at him one after another about his appearance. Such was Seiichi's miserable school life. One day, a voice claiming to be a God announced over the public address system to prepare to be transported to another world. The entire school, including Seiichi, were sent to a fantasy world featuring game-like elements such as levels, stats, and skills. However, the God still had preparations to complete for the transfer, and would send them over as soon as the hero summoning ritual was ready. The classes all formed groups to wait for the transfer, but Seiichi alone was excluded, and as such was summoned to a different area. After being transported, the first thing Seiichi ate was the "Fruit of Evolution," which would come to greatly change his life... This story follows Seiichi from being bullied by his classmates, neglected as a companion, to his hard work, positive attitude, and surviving in this new world. As a result, he becomes one of the champions before he knows it.

The first episode of "season" one was pre-aired on the Fate Project New Year's Eve TV Special 2020 program.

Yui is an average schoolgirl who lives in a future where all computers are supported by a single global network known as COMNET. Yui is a computer-illiterate girl who after a computer-lab accident is approached by IR, a raccoon looking corrector computer program, which tells her she must save COMNET. She must stop the rogue A.I. (Artificial Intelligence) computer program known as Grosser and his hench-programs from taking over the world. Grosser was originally designed to be that manager of all of COMNET. At first she's very reluctant to play the heroine because of her complete lack of knowledge and ability with computers. To save COMNET she must find and gain the trust of the other seven wayward corrector programs. They must also find the creator or COMNET Professor Inukai, to help stop Grosser for good.

Vampires are said to have many weaknesses such as garlic, crosses, and sunlight. Game-loving vampire lord Draluc just so happens to be weak to... everything. He dies, turning into a pile of ash, at the slightest shock. After Vampire Hunter Ronaldo learned of a castle inhabited by a vampire rumoured to have kidnapped a kid, he went there intending to take the devil down. However, the vampire turned out to be Draluc, a wimp who keeps turning into ash at the smallest things. Moreover, the kid wasn't being held captive—he was just using the "haunted house" as his personal playground! When his castle is destroyed, Draluc moves into Ronaldo's office, much to the other's chagrin. Despite their differences, they must try to work together to defend themselves from rogue vampires, Ronaldo's murderous editor, investigators, and more—with Draluc dying continuously along the way.

A story about mahjong.

At the end of the 21st century, the discovery of a new energy source called "DG energy" (short for "divine grace energy") has revolutionized Earth's economy and allowed humanity to colonize space. However, when the initial expedition reaches Pluto, they are attacked by a mysterious, giant life-form known as "Nergal." The Earth Alliance Army fights back by creating an "AG Unit" using ancient robot weapons known as the "G's Frame" which were excavated from archaeological sites all around the world. Girls with special qualities known as "Ancient Girls" can pilot these robots against the Nergal. However, the first AG Unit suffers heavy casualties in the Jupiter Trojan campaign, and the pilot of Unit 04, Minamiya Reiu, goes missing-in-action... Years later, Minamiya Reika, the younger sister of Reiu, enlists with the AG Unit to search for her sister and to protect the Earth from the Nergal. A story of friendship, ancient robot weapons, and battles to the death with the Nergal ensues.

In 2060, the world organization, in order to solve various supernatural crises, selected elite agents around the world to form the Wei Intelligence Bureau. The Bureau of Wei Intelligence also selects the elite of the elite to form an ace squad named “Phantom”. Three years ago, in a mission to receive the treasure, due to the gullibility of the captain Hao Yuan, the Phantom Squad was attacked by the Derek Squad, and almost all of them were killed in action. Hao Yuan himself was also planted by Derek and fell into the cliff. However, the target treasure – the eternal stone accidentally entered Hao Yuan’s body, bringing him back from the dead and gaining the supernatural ability to manipulate time, possessing superpowers such as time standstill and time rewind. From then on, our main character started to live a fugitive’s career. Hao Yuan does not want to face the past, and chooses to live anonymously, living a dull life, dedicated to guarding his comrade’s sister – Gu Xiao Xi. But God forbid, a blue virus appeared in Y city, the infected skin blue texture, and then a little throughout the body, and eventually died. And Gu Xiaoxi, too, was infected. In order to solve the blue virus incident and save Gu Xiaoxi, Hao Yuan returns to the Wei Intelligence Bureau. With the hot and smart secret agent – Xia Rou, the quirky genius loli – Tong Xiao Xiao, and the middle-aged big man – Zhan Peng and other weirdos temporarily get together to form an alternative The Phantom Squad. And our legendary story began.

The first astronaut in human history was a vampire girl. Following the end of World War II, the world-dividing superpowers, Federal Republic of Zirnitra in the East and United Kingdom of Arnack in the West, turned their territorial ambitions toward space. Both countries have been competing fiercely for development. East history 1960. Gergiev, the chief leader of the Republic, announces the manned space flight program Project Mechtat (Dream), which, if successful, would be the first feat for humankind. At that time, Lev Leps, a substitute astronaut candidate, is ordered to perform a top secret mission. The "Nosferatu Project"—a program that experiments with vampires prior to manned missions—will use Irina Luminesk as a test subject, and Lev is to monitor and train her. Even while trifled by the walls of the race and ego of the nations, Lev and Irina share a genuine sentiment as they aim for the universe.

Second half of Mushoku Tensei: Isekai Ittara Honki Dasu.

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!

Miko is a typical high school student whose life turns upside down when she suddenly starts to see gruesome and hideous monsters. Despite being completely terrified, Miko carries on with her daily life, pretending not to notice the horrors that surround her. She must endure the fear in order to keep herself and her friend Hana out of danger, even if that means coming face to face with the absolute worst. Blending both comedy and horror, Mieruko-chan tells the story of a girl who tries to deal with the paranormal by acting indifferent toward it.

Jian Wangchao 2nd season.

The story takes place in the twilight years of the Qin Dynasty, and follows a young man who will dismantle the Qin Dynasty and create the Sword Dynasty.

Maise Higa is a listless first-year high school girl who works part-time at the front desk of her family's hotel in Okinawa, meets an "Ichirou Suzuki," a mysterious youth who came alone from Tokyo as a hotel guest. Since Suzuki's arrival, "dëji" things have been happening around Maise, like fish swimming around the room or a giant banyan tree smashing through the hotel ceiling. ("Dëji" is an Okinawan word that means "totally" or "very.")

Once respected as the Demon Realm's second greatest authority, the Demon King's aide, Jahy, ruled her subjects with fear. But when a magical girl attacks and destroys a mystic gem containing massive power, the Demon Realm is destroyed. Although she survives, Jahy has lost almost all of her powers and finds herself stranded in the human world with a childlike appearance. In order to gather more mystic gems so that she can permanently restore both her original form and the Demon Realm, Jahy will have to adjust to her new life and deal with everyday problems that she has never experienced before. From working to pay for living expenses to arguing with her landlord whenever her rent is late, the great Jahy will not be discouraged!

Set in a city modeled after San Francisco in the 1980s, the protagonist has transformed into the hero Muteking and is fighting against evil aliens for some reason. Such a cheerful hero will return in 2020! Sci-fi hero love comedy Muteking the Dancing Hero, singing and dancing with pop music.

Two short OVA of Hakuouki distributed to those who purchased all six volumes of the DVD. A fandisc game "Hakuoki Zuisouroku" and an official parody "Hakuoki SSL (a high school parody)" were animated.

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