GuessAnime.

1. Ruri no Houseki

High schooler Ruri Tanigawa loves shiny things. She loves them so much that she heads into the mountains to search for crystals herself — where she unexpectedly meets Nagi Arato, a graduate student studying mineralogy. As the pair starts collecting minerals together, Ruri begins developing a genuine appreciation for science and the beauty of the natural world.

Ruri Rocks is currently airing and it will have 12 Episodes. It is also Known as: 瑠璃の宝石, Introduction to Mineralogy

2. Mono

Satsuki Amamiya, a high school Photography Club member, was feeling down due to the graduation of her beloved club president. However, her best friend and fellow member, An Kiriyama, encourages her, and Satsuki decides to dedicate herself to the club activities once again.

The 360-degree camera that Satsuki eagerly bought at an auction has not arrived. An investigates the seller, and she discovers that the person lives very close to the school.

When Satsuki and An visit the seller’s address, they find a candy store. They meet the manga artist Haruno Akiyama, who asks them to model for her manga.

Sakurako Shikishima, a former Cinema Club member, joins the "Cinephoto Club," which merged with the Photography Club. They decide to cooperate with Haruno on her interview, but...

mono is finished and has 12 Episodes. It is also Known as: mono, mono: Weekend Animation

3. Grand Blue

When Iori Kitahara heads off to college, he decides to live at his uncle's dive shop in Izu named Grand Blue. Iori is looking forward to experiencing college life amidst the roar of the waves, the blazing sun, and his cute cousin who lives with him! However, Iori runs into a group of tough guys playing strip rock-paper-scissors, and ends up joining Peek-a-Boo, the college's diving club!

Grand Blue Dreaming is finished and has 12 Episodes. It is also Known as: ぐらんぶる, Grand Blue

4. 2.5 Jigen no Ririsa

Okumura, president of his school’s manga club, prefers 2D character Liliel over real girls. When Ririsa, a cosplay enthusiast and Lilliel fan, joins the club and asks Okumura to become her photographer, the line between 2D and 3D blurs.

2.5 Dimensional Seduction is finished and has 24 Episodes. It is also Known as: 2.5次元の誘惑, 2.5 Jigen no Ririsa

5. Hyouka

Energy-conservative high school student Houtarou Oreki ends up with more than he bargained for when he signs up for the Classics Club at his sister's behest—especially when he realizes how deep-rooted the club's history really is. Begrudgingly, Oreki is dragged into an investigation concerning the 45-year-old mystery that surrounds the club room.

Accompanied by his fellow club members, the knowledgeable Satoshi Fukube, the stern but benign Mayaka Ibara, and the ever-curious Eru Chitanda, Oreki must combat deadlines and lack of information with resourcefulness and hidden talent, in order to not only find the truth buried beneath the dust of works created years before them, but of other small side cases as well.

Based on the award-winning Koten-bu light novel series, and directed by Yasuhiro Takemoto of Suzumiya Haruhi no Shoushitsu, Hyouka shows that normal life can be full of small mysteries, be it family history, a student film, or even the withered flowers that make up a ghost story.

Hyouka is finished and has 22 Episodes. It is also Known as: 氷菓, Hyou-ka, Hyouka: You can't escape, Hyou-ka: You can't escape, Hyoka

6. Yahari Ore no Seishun Love Comedy wa Machigatteiru.

So exactly what’s going to happen when Hachiman Hikigaya, an isolated high school student with no friends, no interest in making any and a belief that everyone else’s supposedly great high school experiences are either delusions or outright lies, is coerced by a well meaning faculty member into joining the one member “Services Club” run by Yukino Yukinoshita, who’s smart, attractive and generally considers everyone in her school to be her complete inferior?

My Teen Romantic Comedy SNAFU is finished and has 13 Episodes. It is also Known as: やはり俺の青春ラブコメはまちがっている。, Oregairu, My youth romantic comedy is wrong as I expected.

7. Yahari Ore no Seishun Love Comedy wa Machigatteiru. Zoku

Hikigaya Hachiman, with his unique thought processes, seemed to be glorifying the life of a loner when his guidance counselor, Hiratsuka Shizuka, talked him into joining the Service Club. Together with the other members, the breathtaking, flawless Yukinoshita Yukino and the cute, popular Yuigahama Yui, he spent his days solving all kinds of problems for his classmates, from relationship worries to running the cultural festival committee. The seasons have given way to fall, and now Hachiman, Yukino, and Yui are preparing for a field trip to Kyoto. What request has been brought to the Service Club this time?

My Teen Romantic Comedy SNAFU TOO! is finished and has 13 Episodes. It is also Known as: やはり俺の青春ラブコメはまちがっている。続, Oregairu 2

8. K-On!!

For two full years, Yui, Mio, Ritsu and Tsumugi have worked together to keep the struggling Light Music Club alive. With a new school year there are new and scary challenges ahead!

K-ON! Season 2 is finished and has 26 Episodes. It is also Known as: けいおん!!, Keion 2, K-On!! 2nd Season

9. Ouran High School Host Club

Haruhi Fujioka is a bright scholarship candidate with no rank or title to speak of—a rare species at Ouran High School, an elite academy for students of high pedigree. When she opens the door to Music Room #3 hoping to find a quiet place to study, Haruhi unexpectedly stumbles upon the Host Club. Led by the princely Tamaki, the club—whose other members include the "Shadow King" Kyouya, the mischievous Hitachiin twins, and the childlike Haninozuka "Honey" and his strong protector Mori—is where handsome boys with too much time on their hands entertain the girls in the academy.

In a frantic attempt to remove herself from the hosts, Haruhi ends up breaking a vase worth eight million yen and is forced into becoming the eccentric group's general errand boy to repay her enormous debt. However, thanks to her convincingly masculine appearance, her naturally genial disposition toward girls, and fascinating commoner status, she is soon promoted to full-time male host and plunged headlong into a glitzy whirlwind of elaborate cosplays, rich food, and exciting shenanigans that only the immensely wealthy Ouran Host Club can pull off.

Ouran High School Host Club is finished and has 26 Episodes. It is also Known as: Ouran Koukou Host Club, 桜蘭高校ホスト部, Ohran Koko Host Club, Ouran Koukou Hosutobu, Ouran Koukou Host Bu, OHSHC

10. Yahari Ore no Seishun Love Comedy wa Machigatteiru. Kan

Third season of Yahari Ore no Seishun Love Comedy wa Machigatteiru..

My Teen Romantic Comedy SNAFU Climax is finished and has 12 Episodes. It is also Known as: やはり俺の青春ラブコメはまちがっている。完, My Teen Romantic Comedy SNAFU 3 , Oregairu 3 , My youth romantic comedy is wrong as I expected 3

11. Giji Harem

Eiji Kitahama joins the drama club with dreams of having a harem like the ones from his favorite manga. Rin Nanakura, an underclassman, finds herself crushing hard on Eiji and tries on different personas in his presence to win him over. No matter how she acts, one thing is certain—her feelings for Eiji continue to grow stronger. Will she ever be able to tell him the truth and be herself?

Pseudo Harem is finished and has 12 Episodes. It is also Known as: 疑似ハーレム, Giji Harem

12. Chuunibyou demo Koi ga Shitai!

Yuta Togashi has a problem. He used to be a "chunibyo," one of the thousands of Japanese students so desperate to stand out that they've literally convinced themselves that they have secret knowledge and hidden powers. But now that he's starting high school, he's determined to put aside his delusions and face life head on. The trouble is Rikka Takanashi, his upstairs neighbor, is just a little bit delusional herself. And she knows all about his past indiscretions.

Love, Chunibyo & Other Delusions! is finished and has 12 Episodes. It is also Known as: 中二病でも恋がしたい!, Chu-2 Byo demo Koi ga Shitai!, Regardless of My Adolescent Delusions of Grandeur, I Want a Date!

13. K-On!

Hirasawa Yui, a young, carefree girl entering high school, has her imagination instantly captured when she sees a poster advertising the "Light Music Club." Being the carefree girl that she is, she quickly signs up; however, Yui has a problem, she is unable to play an instrument.

When Yui goes to the clubroom to explain, she's greeted by the other members: Ritsu, Mio, and Tsumugi. Although disheartened at Yui's lack of musical know-how, they still try to convince her to stay to prevent the club's disbandment. After playing Yui a short piece which re-ignites her imagination, they succeed in keeping their new member and guitarist.

Along with the tasks of school and homework, Yui begins to learn the guitar with the help of the other band members, experiencing many mishaps along the way. However, with the school festival drawing near and Yui getting stuck with her practice, will the Light Music Club be ready in time for their debut?

K-ON! is finished and has 13 Episodes. It is also Known as: けいおん!, Keion, K-ON! Season 1

14. Shoushimin Series

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 is finished and has 10 Episodes. It is also Known as: 小市民シリーズ, How to Become Ordinary

15. Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e 3

The third season of Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e.

The third semester kicks off in high gear with a special boot camp deep in the mountains. Forcibly separated into groups along grade and gender lines, the first, second and third years alike must work together to survive the rugged terrain. Even worse? The leader of the group that comes in last will be expelled. Can Class D make it back to campus intact, or is this where they finally say goodbye to one of their own?

Classroom of the Elite 3 is finished and has 13 Episodes. It is also Known as: ようこそ実力至上主義の教室へ ３期, Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e 3

16. Hibike! Euphonium: Kumiko 3 Nensei-hen

The third season of Hibike! Euphonium.

Kumiko's third year finally begins! With the concert band at Kitauji High School over 90 members, Kumiko is now the president and does her best with her final high school club activities to try to win her long-desired gold at nationals.

Sound! Euphonium 3 is finished and has 13 Episodes. It is also Known as: 響け！ユーフォニアム3, Hibike! Euphonium Third Season, Hibike! Euphonium 3

17. Hana wa Saku, Shura no Gotoku

Hana wa Saku, Shura no Gotoku is a coming-of-age tale set on Tonaru Island, a small island with a population of 600 people. In this setting, Hana Haruyama is a first year high school student who loves to recite works of literature aloud. One day, she is invited by second year student Mizuki Usurai to join the school's broadcasting club, because Mizuki believes that Hana's “reading” has the power to attract people's attention.

Flower and Asura is finished and has 12 Episodes. It is also Known as: 花は咲く、修羅の如く, Flower and Asura, 花修羅, Hanashura

18. Oreshura

It is often said that events of the past shape what you become in the future. For Eita Kidou, a studious, hard-working student aspiring to earn a scholarship so that he can become a doctor, this is an undeniable truth after being abandoned by his love-addled parents. This event left him jaded to the notion of romance, seeing it as only a distraction that gets in the way of studying.

Unfortunately for Eita, his efforts hit a snag when he receives a confession of love from Masuzu Natsukawa, a transfer student with platinum hair and blue eyes. Eita sees through the confession, causing Masuzu to admit that she only did so because having a boyfriend would stop people from asking her out daily. She finds love to be just as much of a hindrance as he does, so by pretending to date, they can stave off advances from everyone else.

Eita refuses on the grounds that his classmates will be jealous, but Masuzu blackmails him by revealing that she has his journal and will post it online for everyone to see if he betrays her. Thus begins Ore no Kanojo to Osananajimi ga Shuraba Sugiru, a story that follows Eita coping with his new "relationship" and the complications that arise from it.

Oreshura is finished and has 13 Episodes. It is also Known as: Ore no Kanojo to Osananajimi ga Shuraba Sugiru, 俺の彼女と幼なじみが修羅場すぎる, Ore no Kanojo to Osananajimi ga Shuraba Sugiru

19. Kono Bijutsubu ni wa Mondai ga Aru!

Kono Bijutsubu ni wa Mondai ga Aru! focuses on an art club in a certain middle school, and its members: Subaru Uchimaki, who is a genius at drawing faces, but only wants to draw the perfect 2D wife; Colette, a rich troublemaker who never stops making mischief; and the club president, who sleeps through sessions and collects sleeping aids. Mizuki Usami is the only person in the club who wants to do art club-like activities, and constantly struggles to do so.

This Art Club Has a Problem! is finished and has 12 Episodes. It is also Known as: この美術部には問題がある！, Konobi