GuessAnime.

1. Kaguya-sama wa Kokurasetai: Tensai-tachi no Renai Zunousen

Known for being both brilliant and powerful, Miyuki Shirogane and Kaguya Shinomiya lead the illustrious Shuchiin Academy as near equals. Everyone thinks they’d make a great couple. But with pride and arrogance in ample supply, the only logical move is to trick the other into instigating a date! Who will come out on top in this psychological war where the first move is the only one that matters?

Kaguya-sama: Love is War is finished and has 12 Episodes. It is also Known as: かぐや様は告らせたい～天才たちの恋愛頭脳戦～, Kaguya Wants to be Confessed To: The Geniuses' War of Love and Brains

2. Shimoneta to Iu Gainen ga Sonzai Shinai Taikutsu na Sekai

With the introduction of strict new morality laws, Japan has become a nation cleansed of all that is obscene and impure. By monitoring citizens using special devices worn around their necks, authorities have taken extreme measures to ensure that society remains chaste.

In this world of sexual suppression, Tanukichi Okuma—son of an infamous terrorist who opposed the chastity laws—has just entered high school, offering his help to the student council in order to get close to president Anna Nishikinomiya, his childhood friend and crush. Little does he know that the vice president Ayame Kajou has a secret identity: Blue Snow, a masked criminal dedicated to spreading lewd material amongst the sheltered public—and Tanukichi has caught the girl's interest due to his father's notoriety.

Soon, Tanukichi is dragged into joining her organization called SOX, where he is forced to spread obscene propaganda, helping to launch an assault against the government's oppressive rule. With their school set as the first point of attack, Tanukichi will have to do the unthinkable when he realizes that their primary target is the person he admires most.

SHIMONETA: A Boring World Where the Concept of Dirty Jokes Doesn't Exist is finished and has 12 Episodes. It is also Known as: 下ネタという概念が存在しない退屈な世界, ShimoSeka, Shimoseka

3. Okusama ga Seitokaichou!

Hayato Izumi is running for student council president. He's studious, responsible, down to earth...and completely outmatched by his rival, Ui Wakana. Ui wins in a landslide after promising comprehensive sex education, free condoms, and other exciting reforms. Bloodied but not discouraged, Hayato licks his wounds and settles for vice president.

Then Ui moves in with him. As it turns out, their parents made a drunken promise decades ago that their children would one day marry. Ui and Hayato must now balance school life with matrimony, keeping their relationship secret from a prudish student body and learning to live with each other. Can they keep the student council in line and find happiness together? Find out in Okusama ga Seitokaichou!

My Wife is the Student Council President! is finished and has 12 Episodes. It is also Known as: おくさまが生徒会長！, Oku-sama ga Seito Kaichou!

4. Seikoku no Dragonar

Learning to ride and tame dragons comes easy to most students at Ansarivan Dragonar Academy—except for first-year student Ash Blake, who is known by his fellow classmates as the "number one problem child." Poor Ash is the laughing stock at school because, despite his unfashionably large star-shaped brand that marks him as a future dragon master, he has nothing to show for it. His dragon has never appeared.

Until now, that is. One fateful day, Ash's dragon awakes in full glory, but appears different than any dragon ever seen before—in the form of a beautiful girl! What's worse, Ash soon discovers that this new dragon has attitude to spare, as she promptly informs him that she is the master, and he, the servant.

Ash's problems with dragon riding have only just begun.

Dragonar Academy is finished and has 12 Episodes. It is also Known as: 星刻の竜騎士, Seikoku no Ryuukishi

5. Okusama ga Seitokaichou!+!

The story begins with Izumi Hayato running to be student council president. But when a beautiful girl swings in promising the liberalization of love while flinging condoms into the audience, he ends up losing to her and becoming the vice president. At the student council meeting, the newly-elected president invites herself over to Izumi's house, where she promptly announces she is to become Izumi's wife thanks to an agreement—facilitated by alcohol—made between their parents when they were only 3.

My Wife is the Student Council President!+ is finished and has 12 Episodes. It is also Known as: おくさまが生徒会長!＋!, My Wife is the Student Council President 2nd Season, Oku-sama ga Seito Kaichou! 2nd Season, Okusama ga Seitokaichou! Plus, My Wife is the Student Council President!+

6. Himegoto

The main protagonist of Himegoto, Arikawa Hime, is in serious trouble. He’s being pursued by loan sharks for the debt his parents left him with. That is, until the Shimoshina High School student council steps in to bail him out. These "kind" girls help Hime by paying off his debt and accepting him into the student council… as a beautiful girl, that is!

Hime just happened to be wearing a French maid outfit when the council came across him, and now they won’t have him any other way. In return for paying off his debt, Hime must dress as a girl and be the council’s pet dog for the rest of his high school years.

Still, things could be worse. After all, Hime is now surrounded by beautiful girls who constantly dote on him, expose him, and do naughty things to him. Thankfully, Hime has at least one person trying to get him out of this predicament: his little brother, who also happens to cross-dress. And then, of course, there’s the head of the disciplinary committee, who is… another cross-dressing boy!? This is getting ridiculous!

Himegoto is finished and has 13 Episodes. It is also Known as: ひめゴト, Secret Princess Himegoto

7. Kaguya-sama wa Kokurasetai: Tensai-tachi no Renai Zunousen OVA

OVA comprising the two volumes of Kaguya-sama wa Kokurasetai Darkness.

Kaguya-sama: Love is War OVA is finished and has 1 Episodes. It is also Known as: かぐや様は告らせたい ～天才たちの恋愛頭脳戦～ OVA, Kaguya-sama wa Kokurasetai: Tensai-tachi no Renai Zunousen OVA

8. Seitokai no Ichizon Lv.2

Sugisaki Ken, through diligence and academic excellence, had successfully entered the paradise that is the Hekiyou Private Academy's Student Council. There, he boldly embarks on his plan to create his personal harem with the 4 girls who are the other council members, namely: The incredibly youthful president Sakurano Kurimu; The cool and kindly yet super-sadistic secretary Akaba Chizuru; Tomboyish and hot-blooded vice-president Shiina Minatsu; and The ephemerally beautiful yet complicated treasurer Shiina Mafuyu. While every day since then has been non-stop fun, Graduation Day now looms near. Could this spell the end of their carefree days?

Student Council's Discretion Level 2 is finished and has 10 Episodes. It is also Known as: 生徒会の一存 Lv.2, Seitokai no Ichizon Lv.2

9. Koi Koi 7

Tanaka Tetsuro is excited at getting a full scholarship at a new high school, far away from his family. What he does not know is that he will be the only boy in an all girl school, and that there is a girl head-over-heels in love with him, waiting for his arrival. But his special friendship with the very cute and dynamic Asuka also causes him to get into a lot of trouble with the powerful student council leadership, as they are at open war with Asuka and her five friends, a group of super amazon warriors called the Koi Koi Seven.

Koi Koi Seven is finished and has 13 Episodes. It is also Known as: こいこい7, Koikoi7, Koikoi 7

10. Seitokai no Ichizon Lv.2: Watasu Seitokai

An OVA bundled with the eighth volume of the Seitokai Series Spinoff novel.

The story itself takes place on Valentine's Day where you could see how the second season's heroines handle the awkward situation of giving a gift to the main character, Sugisaki Ken.

Seitokai no Ichizon Lv.2: Watasu Seitokai is finished and has 1 Episodes. It is also Known as: 生徒会の一存 Lv.2 渡す生徒会, Seitokai no Ichizon Lv.2 OVA