When Miyanaga Saki was a child, she would always lose her New Year’s money during her family's mahjong games. If she won, her family would be upset, and if she lost, well, she lost. As a result, she’s learned to play in such a way that her score always remains plus/minus zero: not good enough to finish first, but not bad enough to finish last.

Now a high school student, Saki dislikes mahjong and avoids it. Until one day a friend drags her to the school's mahjong club, where her hands touch the tiles once again...

Born in a family of delinquents, Nanba Tsuyoshi is expected to succeed his older brother as the strongest delinquent in school. Unbeknownst to his family however, he decides to enroll in the top high school in town to live as a normal high schooler. Can he maintain his double life as the strongest delinquent in town and as a normal high schooler?

The four original Vampire Knight "special chapters" are now the first four chapters of "Vampire Knight Memories". This series focuses on Kaname living with Ai and Ren, and flashbacks of Yuki and Zero's relationship.

With the only thing she inherited from her parents being their once-great family name, the poverty-stricken Reiko Kujouin jumped at the chance for a scholarship to attend a prestigious school known called Meisei Private Academy. Why? Because of the ¥50,000 per month allowance and all her school supplies being paid for, of course!

But little could she expect that, on her very first day of classes, she would be tackled from behind by another girl who, convinced that she's been reincarnated into the world of an otome game, accuses Reiko of being a wealthy villainess...!

In the countryside of Hiroshima, there is a girl who, against all odds, realizes that she is in love with her beloved Sasaki-Kun. Blessed with the opportunity to be sitting next to her crush, she attempts to seduce him with the guidance of the god of teenage love! Meeko-sama! This is the story of a young teen figuring out what it means to be in love and the art of seduction.


Links:
Mangaka's Twitter: https://twitter.com/yasudak00suke
Official Page (JP): https://www.younganimal.com/title/nobukunisan/

Shiori was once a guitarist in a light music club in high school but her first live performance was dashed when her brother ran away from home with a lot of debt, to become a musician in Tokyo.
A decade later, Shiori is now a high school teacher, leading a boring, uneventful life and paying off the debt... till she runs into the ghost of none other than famous guitarist Jimi Hendrix.
The story of a 27-year-old woman on her way to becoming a music legend begins here.

St. Dorothea Academy is a prestigious girls school with rich history. It values friendship of its students and there’s a tradition to appoint 2 students who showed the most beautiful friendship to be “La Raine” every year. It’s said that La Raine, with their eternal friendship guiding the other students, is the one that puts the academy to shine…

Hachiya Tanpopo is just transferred to that school, and this is what she thinks, “Lol”.

Koga decides to confess to the the school's most beautiful girl, Meguro. To his surprise, she agrees to go date him. But what surprises him even more are her following words: "I'm not a virgin."

At a prestigious school where love is banned, an ordinary boy discovers the student council President's secret.

Note: This is not a yuri manga, but there are characters and scenes that appear in the series to have yuri elements.

From ANN:
Kazuki Hayashizaki is a sword master who, after receiving a mysterious sign from a god-demon that uses summon magic, enters the magic department of the national knight academy. Though he was supposed to be the successor to the Hayashizaki sword technique, he begins a magic class with all girls. He will use both sword and summoning in the school battle coliseum.

A character with extreme difficulty and the worst performance, Baek Yu-Seol was considered tr*sh in the game because he couldn’t use magic in a fantasy world where everyone else could.

However…

[Due to the wrong ending, 90% of Aether World has been destroyed.] [Please reach the ‘True Ending.’]
Suddenly, those words echoed in my mind before I was transmigrated to the Aether World.

[You can use the skill ‘Flash’.]
“Why did I possess this character?”

Flash was the only magic skill I was given.

Surviving in Stella Academy where many genius mages ran rampant, I became the notorious Flash Mage.

Chiyoko, in her second year of high school, transfers to a co-ed school due to her dad's job transfer. Since she's only attended an all-girls school since junior high, she excitedly plans to fall in love in her new school. Out of the blue, she begins to see the love meters of 5 hotties and an options window as if she were in an otome game?! She encounters various types such as a glasses boy, a playboy underclassman, and a mysterious senior. Meet-cutes with boys come one after another. This is the beginning of a real otome game school life!

Arisa and Aina are beautiful classmates who are famous for their dislike of men. Hayato, who happened to be involved with the two, will receive "special treatment" from the girls who are supposed to hate men―?! "I want to be a slave to Hayato-sama...

"I want to fall in love and conceive his child."

The long-awaited comicalization of the unpredictable rich romantic comedy has started!

High school student Ooishi Kyou is afraid of women.

Suddenly, five girls confessed to him. Among them, four are creatures called Koibami - beings that devour human romantic feelings. If he has his romantic feelings eaten by these girls, he will never be able to love again.

However, he cannot abandon the feelings of the one who confessed to him for real - Kyou decides to find the one he truly loves among the five! A brain-shaking, romantic comedy suspense begins!

Kurumi Yoshizawa, the student council president, has excellent grades and an inviting, friendly personality… on the surface at least. In reality, her days are spent struggling against her domineering mother and agonizing over her teachers’ expectations.

One day, Kurumi reluctantly goes to meet Naoi, her truant classmate, at her homeroom teacher’s request to look after her. The situation sours quickly as Naoi sees through Kurumi’s facade and makes her animosity clear. On the verge of a meltdown, Kurumi is barely able to stop herself from shoplifting, unaware that she’s being recorded by Naoi…

This is a violent story about two young girls struggling every day with no escape.

Daichi and Akira have been childhood friends forever but have only started dating recently. While Akira is very much a tomboy, there are some parts of her that are surprisingly girly?

Some 20 years have passed since the protagonist was summoned to another world and retired from the army. He is still single in his 40s and lives as a low-ranking professor, until one day, an elite 'monster girl' transfers into his class.

A high school student, Haro Ogawa, is a self-taught oil painter who is trying to paint the ultimate nude. After an encounter with a "witch," he sets his sights on applying to art school...? The mystery that resides in the human body, the ultimate "beauty" is painted on canvas! A skin-colored coming-of-age drama!

Aramiya Seiichi is an ordinary high school... eroge otaku who's given up all hope on girls in the 3D world due to a certain incident. One day, after he bought a bunch of new materials in consequence of experiencing the frustration of a perfect eroge character turning out to be "used goods," he encounters a delinquent-like-looking girl being about to get raped by a bunch of guys. By mere chance, he rescues her.

Days later, when school starts again, it turns out to have been his classmate, Ayame, a feared delinquent girl who's got all kind of rumors about her—especially that she's "used goods." And it appears that she's set on becoming his ideal girl to make him fall for her.

Regnard defies expectations by enrolling in the esteemed Royal Academy of Lasarzia despite being a dropout.

However, during the Blessing Ceremony, he receives a peculiar skill called "Blessing of Sleeping Together," leading to ridicule from classmates.

Despite the mockery, Regnard discovers the true potential of this skill when he spends the night with Frost, an honor student.

This revelation leads to unexpected adventures and a harem fantasy, as Regnard navigates the challenges of his newfound abilities and hidden desires.