disclaimer: tags/genres grabbed from aniDB and/or ANN. I haven't watched the anime myself yet.
comedy action romance sci-fi school life drama fantasy adventure ecchi short episodes sequel
Yume Oukoku to Nemureru 100-nin no Ouji-sama Short Stories

[short 9min]
Gin no Guardian/The Silver Guardian
The protagonist, Riku Suigin is a pro-level gamer. The heroine, Riku Rei, knows of this and is the most beautiful girl in school and also loves video games. Suigin receives a device to play a net game called .Grave Buster. from Rei, but Rei is suddenly kidnapped. When Rei puts his hand on the device, he.s sucked into the world of the game. And in that world, a battle between the tomb raiders and tomb protectors for the tomb of the mother goddess Bango.s tomb has been going on for 1000 years.
[short 15min]
Granblue Fantasy The Animation
This is a world of the skies, where many islands drift in the sky. A boy named Gran and a speaking winged lizard named Vyrn lived in Zinkenstill, an island which yields mysteries. One day, they come across a girl named Lyria. Lyria had escaped from the Erste Empire, a military government that is trying to rule over this world using powerful military prowess. Gran and Lyria, in order to escape from the Empire, head out into the vast skies, holding the letter Gran’s father left behind - which said, "I will be waiting at Estalucia, Island of the Astrals".
fantasy
Alice to Zouroku
A group of young girls possesses a mysterious power which gives them the ability to materialize their thoughts. Detained and experimented upon, these youths are locked away in secret until one of them manages to escape. Her name is Sana . a girl with the power to ignore the very laws of physics. When this wilful powerhouse crosses paths with a stubborn old man named Zouroku, his carefully-ordered life will never be the same again!
supernatural
Tsugumomo
Kagami Kazuya’s most treasured possession in the world is the obi left to him by his late mother. The scent of cherry blossoms infused into it helps him through his day, but he never expected it to save his life, becoming a beautiful kimono-clad girl who calls herself an artifact spirit. Her name is Kiriha, tsukumogami of the sash, who naturally moves in with him, as he is her owner. Throw in his bespectacled childhood friend Chisato who meddles in his affairs, an overprotective older sister who wants to take baths with him, a busty priestess, a seductive sorceress named Kokuyoura, and Kazuya’s life has just gotten a lot more interesting.
action, romance, supernatural, harem, ecchi
Akindo Sei no Little Peso
The planet of Akindo is the best planet in the universe at earning money. Prince Peso, the planet’s ruler, lives a bum’s life of playing smartphone games every day, always concentrated on paying micro-transactions. One day, the king demands that all the money in the universe be brought to him, and Peso and his lackeys are cast out. Now, Peso travels the universe, meeting aliens and fighting them in business battles.
[short 5min]
Souryo to Majiwaru Shikiyoku no Yoru ni...
A woman reunites with her first love at a class reunion. She discovers that Kujou has taken over his family’s temple as a priest. She thought that priests did not have romantic relationships, but a passion ignites between the two. She wonders if what she and the priest do is really right.
romance, shoujo, too ecchi?, [short 5min]
Sekai no Yami Zukan
The anime is an omnibus short format that will tell stories of the strange and bizarre in our world, including UFOs, cryptids, curses, ancient civilizations, supernatural powers, spiritual experiences, bizarre cases, different dimensions, and urban legends, told in a picture show style. The anime seeks to evoke the retro atmosphere of pulp horror stories that were popular in the 60s and 70s in magazines.
horror, supernatural, [short 5min]
Warau Salesman New/Laughing Salesman New
In a society filled with people who do whatever with their lives, there are some who struggle with it or never achieved their goals. The story focuses on individuals who meet a shadowy and ominous salesman, Moguro Fukuzou, who promises them a better life if they follow his advice. However, the clients that Moguro meet often cheat, refuse to rely on his help, or worse - deny that they received assistance at all. When this invariably happens, Fukuzou punishes his clients by using their reliance on his aid against them. With their lives ruined, he is satisfied with his job and looks for more potential clients.
comedy?, horror?, [remake]
Frame Arms Girl
Gennai Ao mistakenly opens a package that wasn’t meant for her, and, to her surprise, she sees a small robot named Gourai, a Frame Arms Girl who has an evolving personality. Confused as to how this little robot made it into her life, she finds out that she is the first person to activate her. She realizes taking care of Gourai is harder than she thought, especially when competitive fights are involved!
action, scifi
Rokudenashi Majutsu Koushi to Akashic Records
The Alzano Imperial Magic Academy is located in the southern part of the Alzano Empire,and is among most prominent magic schools in the world, where students can learn the highest forms of magic. All those who strive to learn magic dream of studying at this academy, and its students as well as its teachers are proud to be a part of its 400-year history. Glenn Radars is a new instructor who has suddenly been appointed to teach part-time at this highly respected academy. The previously unheard-of lessons of this man known as a good-for-nothing bastard are about to begin.
fantasy, magic
Oushitsu Kyoushi Heine/The Royal Tutor
The "Royal Tutor" is a special tutor carefully selected for the task of teaching the prince, and a title given only to the best teacher in the nation. Heine Wittgenstein has been called to the kingdom of Grannzreich to take on the role of the Royal Tutor. He’s been ordered to raise a worthy candidate for the throne, but he’s greeted with four princes of completely different, unique personalities... all brothers, no less! How will Heine handle these four brothers who were too much for all the previous Royal Tutors, prompting them all to run away from the job?
comedy, fantasy
Boruto - Naruto Next Generations

[sequel-ish]
Makeru na!! Aku no Gundan!
The "Evil Corps," led by Don, are on a mission to conquer the universe. They set out to invade Earth first, but they struggle as some quirky Earthlings stand in their way. Eventually Don’s plan to invade Earth becomes distorted...?! This wacky slice-of-life sci-fi comedy stars a team of aliens you just can’t hate and lots of unique Earthlings!
[short 5min
Love Kome - We Love Rice
The Harvest Show is a concert where all of the different grains show off their beauty to everyone watching, and HarveStars is the name given to the grains who put on the best performances. In this modern age of rice acreage reduction policies and Westernization of eating habits, bread has become the most popular grain in Japan, and dinner tables are dominated by Yeast King, the bread HarveStars. But five new rice students have enrolled at Kokuritsu Inaho Academy, a school on the verge of shutting down, and they form a new group called Love Rice that’s practicing to beat Yeast King at the Harvest Show and win back the popularity rice once had...
comedy, [short 4min]
Sagrada Reset/Sakurada Reset
The story is set in a town called Sakurada, where almost half the population possess some form of special powers. The story centers on two high school students. Asai Kei has the ability to perfectly remember anything he sees and hears, while Haruki Misora can turn back or "reset" time for a maximum of three days. Both students are members of their school’s "Service Club," which their town’s administration bureau uses to observe people with powers and protect the peace. By using their powers together (Kei can remember things even when time has been reset), they solve cases for the club. Kei learns of the "MacGuffin" stone, which looks like a worthless black stone, but in reality will turn out to be the stone upon which the existence of Sakurada will hinge on.
drama, sci-fi
Busou Shoujo Machiavellianism/Armed Girl's Machiavellism
Fudou Nomura transfers to a school where girls carry weapons to rule mercilessly over the boys. Shortly after transferring he becomes a target of Rin Onigawara, a member of the Five Ruling Swords that commands the school. In order break free he must defeat the Five Ruling Swords.
action, school life
Sakura Quest
Five girls work in the tourism bureau of their small provincial town. The town revives its "micro-nation" tourism program, which originated from a nationwide movement during Japan’s bubble economy period, and hires the five girls as "monarchs" (tourism ambassadors).
comedy
Tsuki ga Kirei
It’s the third year of middle school. Kotarou, a bookish boy aspiring to become a novelist, and Akane, a track girl who loves to run, meet in the same class together for the first time. They’re put in charge of the equipment for the sports festival, and slowly grow closer via LINE. How does Kotarou deal with his growing feelings for her? Meanwhile, Takumi has been in love with Akane since first year, and Akane’s friend, Chinatsu, becomes interested in Kotarou.
romance, school life
Clockwork Planet
This news may seem sudden... but this world died long ago. Earth died a thousand years ago, and a legendary clockmaker known only as "Y" rebuilt it using clockwork. Naoto Miura, a failing high school student, encounters RyuZU, an automaton that "Y" left behind, and the genius clockmaker Marie. When the abilities of these three come together, the gears of fate begin to turn. The cycle of failure and success repeats endlessly as the three of them work to repair the endangered "Clockwork Planet" in this clockpunk fantasy!
sci-fi, fantasy
Kabukibu!
Kurogo Kurusu, a high school student who loves kabuki so much that it’s annoying. Kurogo yearns to perform kabuki as part of a club at his school, but currently his school doesn’t have a kabuki club. So Kurogo sets out to create a kabuki club, and his first order of business is to gather members.
kabuki, school life
Renai Boukun/The very lovely tyrant of love
A Kiss Note is a powerful notebook that makes anyone who have their names written together instantly fall in love if they kiss each other. This magical item belongs to an angel named Guri whose job as cupid is to create couples. However, she accidentally writes down Aino Seiji, a regular high school student, and unless he kisses someone in the course of 24 hours, Guri will die, and Seiji will remain a virgin for the rest of his life. Eventually, Guri convinces Seiji to kiss his crush, Hiyama Akane, the school’s popular girl who turns out to be a yandere, with her feelings for Seiji bordering on obsessive and psychotic. To make the matters worse, after Akane and Seiji become a couple, Guri decides that she likes Seiji as well. Now, what seems awesome to most guys becomes hell for Seiji who just wants a normal relationship with a girl.
comedy, romance, supernatural
Hinako Note
Hinako is poor at speaking, and lives in a rural part of Japan. She wants to improve her speech to be able to talk to people freely, so in high school, she transfers schools to Tokyo and plans to join a theater club. When she arrives, it turns out her boarding house is a secondhand bookstore, and a girl who eats books lives there.
slice of life, comedy
Ani ni Tsukeru Kusuri wa Nai!
What’s your brother like? To Sec, her brother Min is someone who would tease her and make her explode 100 times a day; not a peaceful day as the two are fighting every single minute. However, when troubles come, Min will become a caring, loving brother who protects his little sister at all cost.
comedy, slice of life, [short 4min]
Twin Angel Break
Amatsuki Meguru is a girl who innocently aspires to be a hero of justice and the cool Kisaragi Sumire who grew up in the strict Kisaragi household... The two girls who are in their 3rd year of middle school end up getting orders from a mysterious hedgehog named Miruku-chan and turn into Twin Angels in order to fight evil! Meguru is always cheerful but sometimes a bit too forceful. Meanwhile, Sumire isn.t accustomed with being around others. Despite their differences, as they work together, they start opening up to each other.
[spinoff], magical girl
Seikai Suru Kado/Kado - The Right Answer
Shindou Koujirou is a highly-skilled negotiator working for the Ministry of Foreign Affairs. As his plane at Haneda airport prepares to take off, a huge mysterious cube appears from the sky. "It" expands rapidly, and absorbs the passenger plane and its 252 passengers. The cube’s name is "Kado". A strange being called Yaha-kui Zashunina appears from within Kado and tries to make contact with humanity. Shindou, who was been absorbed by Kado, ends up taking on the role of mediator between Yaha-kui zaShunina and humanity. The Japanese government sends its own negotiator, Tsukai Saraka. Who is Yaha-kui zaShunina? What does he want?
scifi
Re:Creators
People have created many stories. Joy, sadness, anger, deep emotion. Stories stir up emotion and captivate. However, those emotions are nothing more than the feelings of a spectator. What if the characters in the stories had their own will. In their eyes, are we, the creators of the stories, like gods? Revolution for our world. Punishment for the land of the gods. Re:CREATORS. Everyone becomes a Creator.
action, fantasy
Eromanga-sensei
Izumi Masamune is a high school student who loves writing light novels. Having no artistic skill himself, Masamune always gets his novels illustrated by an anonymous partner using the pen name Eromanga Sensei who, like the name suggests, draws questionably perverted images despite being extremely reliable. In addition to balancing his passion and school, Masamune is also stuck with taking care of his only family member, his younger sister Izumi Sagiri. A hikikomori by nature, Sagiri shut herself in her room for over a year and constantly bosses Masamune around despite his attempts to get her to leave her room. However, when Masamune inadvertently discovers that his anonymous partner has been Sagiri all along, their sibling relationship quickly leaps to new levels of excitement, especially when a beautiful best-selling shoujo mangaka enters the fray.
comedy, romance
ID-0
I-Machines are the general term for robots that operate in extreme environments. While Alliance Academy student Mikuri Maya is in the middle of operating an I-Machine, she gets involved in an incident with pirates, and ends up serving as a crew member on an excavation company’s spaceship.
sci-fi
Zero kara Hajimeru Mahou no Sho/Grimoire of Zero
The grimoire fantasy series follows a witch named Zero who is ignorant of the world and a half-beast half-human mercenary who longs to be human. Witches who practice sorcery exist in the world, however, in this era no one knows how about the art and study of witchcraft. Zero is going on a journey to search for a magical tome called The Book of Zero that hides a power that can destroy the world. The mercenary travels with her as her guard.
fantasy, action
Fukumenkei Noise/The Anonymous Noise
Nino, a girl who loves singing, made a childhood promise with her first crush Momo and song-composing Yuzu to someday find her voice. The three went their separate ways, but Nino kept her promise and continued to sing. Years later, the three are now high school students, and Nino is drawn into the world of keionbu or band club.
romance, music, school life
Shuumatsu Nani Shitemasu ka? Isogashii desu ka? Sukutte Moratte Ii desu ka?
Humans have been driven to extinction by "Beasts." The duty of fighting the Beasts fall to "Fairies," who are destined to use their powers to wield "Holy Swords" called "Kariyon" and eventually meet their destiny of death. A sole human being named Willem wakes up after several hundred years, and continues his fight against the Beasts.
fantasy, drama
Kenka Banchou Otome - Girl Beats Boys
Hinako has grown up not knowing her parents and thinking she has no relatives. One day, a boy named Hikaru appears before her, and says he’s her older twin brother. Hikaru asks Hinako to take his place at attending a famous private all-boys academy for delinquents.
[short 10min]
Room Mate - One Room side M
Room Mate is a "first-person anime" from the perspective of a female protagonist opposite three male neighbors.
[short 5min]
The Snack World
The "hyper casual fantasy" is set in Snack World, a seemingly traditional fantasy world - except it has convenience stores, smartphones, and other elements of the modern world.
[for kids?], fantasy, comedy, [3DCG]
Sin - Nanatsu no Taizai/Seven Mortal Sins
The prideful archangel Lucifer disobeys God and is cast into the lowest level of hell as a fallen angel. On her way to hell, Lucifer happens to meet a high school girl on Earth named Maria, who helps her. In hell, Lucifer meets Leviathan, and Leviathan explains to Lucifer about The Seven Deadly Sins, the seven demon king rulers of hell. After The Seven Deadly Sins seal Lucifer’s powers, Lucifer goes on a journey with Maria and Leviathan to defeat them.
supernatural, ecchi
Puripuri Chii-chan!!
A girl named Yuuka encounters a being from the depths of the Earth named Chii-chan (a pun of ’Chiteijin,’ the Japanese word for underground-dweller), and an alien named Ucchan (a pun of ’uch. jin,’ or ’alien’.) The two beings begin living with Yuuka who promises to protect them.
[short 15min]
100% Pascal-sensei
The story centers around an elementary school teacher who is so stupid that he cannot even write his own name. He does whatever he likes in his classroom. Plus, by all appearances, he is not human.
[short 15min]
Tomica Hyper Rescue Drive Head - Kidou Kyuukyuu Keisatsu
In the future, just a little after the present day... To respond to disasters beyond human comprehension and the increasing complexity of crime and mishaps, the mobile emergency police Hyper Rescue (an organization newly formed by the government primarily for life-saving) developed Drive Heads that are specialized with police, fire-fighting, and rescue capabilities. Drive Heads are special vehicles that change from car forms to humanoid walker vehicles. The grade schooler Kurumada Gou and other children found to be suitable become drivers and join forces with the mobile emergency police and other adults. Even now, they race to the scene to protect the peace and security of all humanity. Go Rescue!
Atom - The Beginning
Japan in the near future suffers an unexplained major disaster. Five years later, reconstruction is well underway. Two young researchers at a university are pinning all their hopes on robot development. Now their new interpretation of the eternal hero Astro Boy up until his birth is just about to start!
scifi
Future Card Buddyfight X

[sequel]
Boku no Hero Academia 2

[sequel]
Monster Strike 2nd season

[sequel], [short 10min]
Shingeki no Kyojin/Attack on Titan 2

[sequel]
Duel Masters (2017)

[sequel]
World Fool News Part II

[sequel], [short 10min]
Furusato Meguri - Nippon no Mukashi Banashi/Folktales from Japan S2

[sequel], [for kids]
Beyblade Burst God

[sequel]
Starmyu 2

[sequel]
Idol Time PriPara

[sequel]
Shounen Ashibe - Go! Go! Goma-chan 2

[sequel], [short 9min]
Idolmaster Cinderella Girls Gekijou

[spinoff], [short 3min]
Aikatsu Stars! 2nd - Hoshi no Tsubasa

[sequel]
Rilu Rilu Fairilu - Mahou no Kagami

[sequel]
Berserk (2017)

[sequel]
Nobunaga no Shinobi - Ise Kanegasaki-hen

[sequel], [short 4min]
Shingeki no Bahamut - Virgin Soul

[sequel]
Kyoukai no Rinne 3

[sequel]
Uchouten Kazoku 2

[sequel]
Natsume Yuujinchou Roku

[sequel]
Saenai Heroine no Sodatekata Flat

[sequel]
Dungeon ni Deai o Motomeru no wa Machigatte Iru Darouka Gaiden - Sword Oratoria

[sequel?]/[spinoff?]
Yu-Gi-Oh! VRAINS

[spinoff]