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
Pupipoo!
The story centers around Himeji Wakaba, a fifth-grade girl who can see things others cannot. As a result, she is scared by her surroundings, keeps her distance from others, and lives a lonely life. One day, she meet a mysterious soft, pink creature that cries Pupipoo! - and her life is changed from that day forward.
comedy, supernatural, slice of life, [short 4min]
Robot Girls Z
The Robot Girls Z trio, a.k.a. Team Z, is a unit assigned to promote the future energy source Photon Energy, as well as eliminate any enemies who seek to take Photon Energy for themselves. The team’s members are Z-chan, a reimagining of Mazinger Z; Gre-chan, a reimagining of Great Mazinger; and Grenda-san, a reimagining of UFO Robo Grendizer, and they’re all in girl form. Usually, the team operates from the Nerima Ward Oizumi Academy’s Photon Energy District, in Tokyo.
comedy, parody, [short 10 min] x3
Saikin, Imouto no Yousu ga Chotto Okaishiin Da Ga
A girl named Mitsuki Kanzaki lives with her step-brother Yuya after her mother remarries. One day, Mitsuki is possessed by the self-proclaimed spirit of a young girl, Hiyori Kotobuki. Hiyori (in Mitsuki’s body) must fall in love with Yuya to move toward the "Gates of Heaven."
ecchi, romance, comedy
Minna Atsumare! Falcom Gakuen
The warriors who have been warped by the rampaging power of "justice" have been summoned into the world of Xanadu. It’s up to Dark Fakt, a former villain, and principal Lappi to reeducate these students.
comedy, fantasy, [short 2min]
WitchCraft Works
The story centers around Takamiya Honoka, a boy whose classmate Kagari Ayaka is talented in sports, excels in classes, and is attractive on top of everything. She also happens to be the most powerful witch on earth. Her purpose in life is to protect Takamiya at all costs.
fantasy, comedy
Space Dandy
The lead character Dandy is an alien hunter and the dandiest man in space. The anime is set far in the future where people have gone to the far reaches of the universe. Dandy is searching for aliens that no one has found before with his robot partner QT.
comedy, sci-fi
Noragami
Yato is a minor deity who lacks even a single shrine. In order to build his own shrine, he scrawls his cell number on the wall of a downtown bathroom telling people he will help them in exchange for a 5-yen offering, becoming a self-styled "delivery god." Hiyori, the daughter of a respectable family, is almost in a traffic accident, but is rescued by Yato. This causes her to become a "hanyou," a person who can easily lose her soul. She chases Yato down, and they begin to work together. Yato also finds a boy named Yukine who becomes a "sacred treasure" that can be used by a god. The three of them battle "you" who bring harm to humans as Yato’s hidden history is gradually revealed.
action, adventure, comedy
Nobunagun
Shio Ogura is a Japanese high school student, who is visiting Taiwan on a school trip when she is suddenly attacked by monsters. Agents known as "E-Gene Holders" from the government agency DOGOO also arrive, who wield weapons infused with the spirits of historical figures. Shio is revealed to also be an E-Gene Holder when the soul of Oda Nobunaga awakens after she tries to rescue a friend.
action, fantasy
Buddy Complex
On the first day back after summer break, high-school student Aoba is attacked by a giant robot that appears out of the sky. As he’s pursued through the city, his classmate Hina appears in a robot of her own. She rescues him, and tells him cryptically that "Dio is waiting for you", before she disappears. This begins Aoba’s new life as the pilot of the Free Treaty Alliance against the Great Zogiria Republic.
sci-fi
Nobunaga the Fool
The planets of the East and the West were once connected by the Ama-no-Hashidate. The culture that built it was destroyed countless years ago, and the two planets have had separate histories ever since. On the Western planet, ancient culture is experiencing a renaissance after a long period of war. Jeanne Kaguya D’Arc, a girl from the Western Planet, was prophesied to be the Savior of the World at her birth. With Leonard Da Vinci, she lands on the Eastern Planet, where Nobunaga "the Fool" longs for the power to change the world, as his planet is still locked in a war where many heroes vie for supremacy. When these two people meet, the culture of both worlds will be transformed.
action, samurai, sci-fi
Tonari no Seki-kun
In the middle of class at a certain school, Yokoi Rumi, a diligent student, has her in-class life turned upside-down when her next-door desk mate Seki Toshinari begins to play by himself at his desk in class. Although Yokoi is irked by Seki’s distracting yet intricate playtime, she finds herself being drawn into his interesting hobby. Never being able to focus, Yokoi observes Seki’s stunning ways of slacking off in class.
school life, [short 8min]
SoniAni - Super Sonico The Animation
Super Sonico is an 18-year old college student who plays guitar for the three-girl band Fastest Speed in Space and models for pin-ups. In spite of her busy schedule, she still finds time to her grandmother at her restaurant. One night, her band members Suzu and Fuuri, are late to a concert, forcing her to play alone. The result of that show will have far-reaching consequences for Sonico.
music, slice of life
Toaru Hikuushi e no Koiuta
This is a tale of a prince who lost everything leaves for a journey with no guarantee of returning to his hometown safely. With hatred and revenge in his mind, he met several people that taught him about friendship... and love.
advanture, military, fantasy, romance
D-Frag!
Kazama Kenji was feared as the worst delinquent of Fujou High, but after certain events led him to peek in on the Game Development Club, he witnesses the outbreak of a fire. While the members inside manage to succeed in putting it out, they all attack Kenji to erase his memory and hide the incident. Kenji desperately tries to escape from them, but when their president Shibasaki Roka rescues him he ends up joining their Game Development Club.
clubs, school life, comedy
Hamatora
"Minimum" - a special inborn power found in a limited number of human beings, known as "minimum holders." In Yokohama, the detective team Hamatora, formed by two minimum holders named Nice and Murasaki, comes across information connected to a serial killer being pursued by their old friend Art. It turns out all the victims are minimum holders like them. Unwillingly at first, the two detectives become involved in the investigation.
action, detective, super power
Youkai Watch
When Keita frees Whisper, a ghost-like y.kai, from 190 years of imprisonment, Whisper pledges to protect Keita from supernatural dangers. Whisper also gives Keita a watch that allows Keita to see other y.kai. Together with the twin-tailed cat spirit Jibanyan, they encounter lots of youkai-related problems and solve them.
comedy, supernatural
Onee-chan ga Kita
13-year old Tomoya’s father remarries, and his new stepsister is 17-year old Ichika. She decides she’s completely in love with him, to a ridiculous and somewhat scary degree.
comedy
Mikakunin de Shinkoukei
Yonomori Kobeni, an ordinary girl, finds out on her 16th birthday that she is betrothed to Mitsumine Hakuya, a boy the same age as her. Hakuya moves in from the countryside and starts living with her, bringing his younger sister who is still a primary school student with him.
comedy, school life, romance
Mahou Sensou/Magical Warfare
In this modern magic action story, Nanase Takeshi is an ordinary high school boy who has a somewhat dark past. Due to certain circumstances, he formed a fake couple with his childhood friend Isoshima Kurumi, but otherwise, he lives a normal life. However, one day, he comes across a girl named Aiba Mui, in a uniform he has never seen before, collapsed on the school campus. This encounters changes Takeshi’s destiny completely. Mui tells Takeshi that she is a magician, and she apologizes, for she turned Takeshi into a magician, too. What Takeshi once knew as one world is actually two . the world where magicians live and the world where humans live.
fantasy, magic
Strange+
Kou is searching for his older brother Takumi, who left home and has gone missing in the city. Worried that he’s in trouble, Kou decides not to go home until he’s found him, only to find him all too easily. Takumi, it turns out, has become head of the Mikuni Detective Agency, and has no intention of going back home. Kou decides that if he can’t make Takumi return, then he’ll join the agency himself.
comedy, slapstick, slice of life, [short 5min]
GO! GO! 575

music, slice of life, [short 5min]
Z/X - Ignition
The story is set in the not-so-distant future. Five "Black Points" suddenly appeared around the world as portals to parallel worlds. Immediately after, strange creatures began their invasion from these portals. These creatures are the inhabitants of five worlds - the same worlds in different timeframes. In order to ensure their own future timeframe survives, each of the five invasion forces battle to wipe the other future timeframes out. The key is one card-shaped device.
fantasy, comedy, demons, sci-fi
Sakura Trick
The story revolves around Haruka and Yuu, two girls who go to a high school that is slated to be shut down in three years. To share something special between them, they share a kiss, and their relationship deepens from that moment onward.
comedy, school life, romance
Pupa
The life-and-death sibling story follows Hasegawa Utsutsu and Yume, a boy and his little sister who find themselves all alone. One day, Yume sees a mysterious red butterfly and her body undergoes a strange metamorphosis . into a creature that eats humans. Utsutsu struggles to find a way to restore his sister.
fantasy, horror, school life, [short 4min]
Hoozuki no Reitetsu
Hoozuki is the aide to the great king of Hell, King Enma. Calm and super-sadistic, Hoozuki tries to resolve the various problems in Hell, including a rampaging Momotarou and his companions. However, he also likes spending his free time on his hobbies, such as fawning over cute animals and raising "Goldfish Flowers".
comedy, supernatural, dark comedy
No-Rin/Nourin
When the national idol Kusakabe Yuka suddenly retired from the entertainment business, it shocked the world and it devastated teenager Hata Kousaku. Kousaku was Yuka’s biggest fan and her departure left him depressed. His classmates at the Tamo Agriculture School finally are able to get him to leave his room and attend his class, but to everyone’s amazement, Kusakabe Yuka (her stage name) comes into the class under the name Kinoshita Ringo as a transfer student. Kousaku realizes he has the once in a lifetime opportunity to get to personally know his dream girl and, together with his group of friends, try to find out why she is here and become closer than just classmates.
comedy, idol
Wake Up, Girls!
Green Leaves Entertainment is a tiny production company on the verge of going out of business in Sendai, the biggest city in Japan’s northeastern Tohoku region. The agency once managed the careers of magicians, photo idols, fortune-tellers, and other entertainers, but its last remaining client finally quit. In danger of having zero talent (literally), the president Tange hatches an idea of producing an idol group. On the brash president’s orders, the dissatisfied manager Matsuda heads out to scout raw talent. Matsuda makes a fateful encounter with a certain girl...
comedy, slice of life, idols
Nisekoi
As a child, Raku Ichijo made a secret promise with his childhood sweetheart, keeping a pendant as a memento while his love took the key. He dreams of one day meeting his past love, but years later, reality smashes his hopes when Chitoge Kirisaki accidentally knees him in the face. Though Raku’s a normal high schooler, his family heads the notorious yakuza gang the Shuei-Gumi faction. And he’s dragged into family affairs when he’s forced into a relationship with Chitoge, the daughter of a rival gang’s boss.
comedy, harem, romance
Sekai Seifuku - Bouryaku no Zvezda
What does it take to conquer the world?! Every leader of the past has thought of it... but all they have done was to merely dream of its greatness. World domination... nobody has been able to achieve it. Until one little girl by the name of Kate Hoshimiya came along. Kate Hoshimiya will shock the world! How was she able to carry out such a magnificent stunt? So frightful! So glorious! Could this be... the Zvezda Plot?! Let the light of our great Zvezda shine upon this land far and wide!
action, super powers, comedy
Wizard Barristers - Benmashi Cecil
In 2018, humans and wizards live together in Tokyo. Police continue to protect order in society, but wizards are tried according to magical law, in special courts defended by wizard barristers. At age seventeen, Cecil has just become the youngest wizard barrister, and begins work at the Butterfly Law Offices. While she hasn’t realized it yet, she has tremendous magical potential.
action, cops, magic
Inari, KonKon, Koi Iroha
Inari Fushimi is a middle school girl who’s never had a requited love, since she’s a shy, clumsy and not very bright. One day, she witnesses her crush Kouji giving a letter to her classmate Akemi. Shocked and saddened, Inari rushes to a shrine, where the goddess Uka-no-Mitama-no-Kami appears to her. As thanks for saving a fox pup, as well as out of pity for her plight, the goddess grants Inari the power to shape-shift.
romance, supernatural
Seitokai Yakuindomo Bleep

[sequel]
Saki Zenkoku-hen

[sequel]
Wooser no Sono Higurashi Kakusei Hen

[sequel], [short 4min]
Chuunibyou demo Koi ga Shitai! Ren

[sequel]
Gin no Saji - Silver Spoon season 2

[sequel]
Maken-ki! Two

[sequel]