A girl with too much common sense, a boy whose sole ambition is to draw the perfect 2D bride, an addlebrained ghost member, and their always sleeping president — what is wrong with this art club?!

From Girls' Generation Scanlations:

He's perverted, malicious, a devil that calls himself 'Ore-sama'.
His true character is -? The Demon King, Char, from a parallel world called Avalon, fell in love with the daughter of a shrine, Hashiba Rin. Both their hearts and bodies have been entrusted to each other, but a first love, Shou-chan, confesses to Rin-?

From Starry Heaven:

Hashiba Rin, the daughter of a Shinto shrine, fell in love with the demon king, Char, who came from a different world called Avalon. They shared their love with their body and mind, but Rin's first love, Shou-chan, confessed to her and---?
Following Char and Rin's meeting, "Honey Colored Devil," the popular serialized in heaven love magazine appears with an extra chapter<3

from Renta!

Alice Ryouhei will leave high school soon, but he's trying to avoid thinking about his future. Late one night, when he's hanging out with his tough friend Karube and his silly, girl-crazy friend Chota, they see fireworks. After one blindingly bright explosion, they find themselves waking up in a different world. In this 'Borderland,' people are forced to either participate in potentially deadly games or simply die. Will Chota, Karube, and Ryouhei be able to survive this dangerous new world, and is there a way they can get back to their original lives?

Makoto meets a sweet, shy girl named Haruna helping out at the school's athletics festival. He confesses his feelings for her the next time he sees her, and she bluntly rejects him, only to call him later and ask him out herself! The source of all these mixed signals is Haruna's "evil" twin sister, Natsumi. Natsumi is the opposite of Haruna, she's a forward, crude girl bent on taking whatever she can from her twin sister. Makoto is stuck in between Haruna and Natsumi, as they viciously fight over who will win him in the end.

Included one-shots:
Volume 1: Hikaru challenge!, Detarame Machi no Kaigenshou.

Onizuka is a prisoner. For reasons that he only knows, he tells the story himself of what happened between him and Class G (which is basically an idol class), expect many troubles, adventures and of course many hilarious moments.

GTO - Paradise Lost is a sequel to GTO and Onizuka is now 24 years old as well.

By aquamarinep:
The world has became a place dominated by males. Women are virtually extinct with their number-count in the hundreds and the youngest of the them in her forties. It has been long accepted that a wife, being a gender so rare, can have multiple husbands. Sex change to satisfy sexual desire is a growing phenomenon, although is still looked down upon by society.
In such a disordered place where she is the only girl, Ho Su awakens.

Fujisawa Ayana was horribly bullied at school. At first, she tried to defend herself, but she soon learned to just stay quiet and wait for the pain to end. However, the bullying escalated one day, when someone pushed her into traffic. At the hospital, as she recovered, she suddenly realized that even if she didn't fight back, her classmates were probably going to eventually kill her.

From this realization, she soon decided that the only path left was for her to take revenge. Her new plan included the students who bullied her, those who stood aside and laughed, and those who did nothing to make it stop. She began gathering notes on her classmates, planning exactly what she could do to make each of their lives collapse. While some of the students really seemed to deserve their fate, her plan also included classmates that she used to count as close friends...

In the corner of a certain town, there is a teashop where the master, Tsukasa, obtains and cares for plants from the depths of hell.

Anzai, half vampire, and Tsukasa, a normal school girl.
Vampires seem to be living among humans. Of course the government does not know of their existence, because their appearance does not differ from humans. They also do not need to drink blood, but when they get a craving or get angry, they can become uncontrollable monsters.

Aikawa Kazuhiko was the captain of Tendoji high-school prestigious basketball team. He moves into a new town to attend Mizuho high school and joins its basketball team. However, Mizuho high's basketball team is far from being prestigious, in fact, it's a now defunct basketball team. Nevertheless to say, Kazuhiko's presistence, passion and basketball skills inspired other team members of the dysfunctional basketball team to gear up and start practicing again.
The aim is to play in the national tournaments where all young basketball players meet their opponents in basketball competition. The tale of youth of five protagonist: Fujiwara Takuya, Ishii Tsutomu, Dobasi Kenji and Aikawa Kazuhiko have just began along with the live of Mizuho high-school basketball team.

Rika is 19. She loves cosplaying, especially wearing high-school uniforms. On an online dating site, she meets a high school student, Hajime. He turns out to be her ideal guy and she meets him pretending to be still a high school student... Can this kind of relationship work?

Bluechair follows the musings of Shen, a mysterious figure in a colorful plane of existence where thoughts and reality seem to blend together. What is the blue chair? What compels him to sit on it? Where is this realm he resides in? Stay tuned as none of this is answered and you are instead taken on a rousing adventure through the mind of a complete dork.

A collection of sweet stories about couples and singles, office workers and unemployed people. But be warned: there’s more than a touch of bitterness here.

In an attempt to see her dad again, Yuuki and her brother Hiroaki decide to make a championship baseball team (Their dad is a big baseball fan apparently). Iria, the new transfer student (BISHIE ALERT), who is a total oddball has star pitching potential. Yuuki forces him to join her team picking up others as they go along. [This is a joint project (code name "Shoujo Sex Fiends Love Christmas"wink with seven other groups: DGT, ShoujoMagic, MegKF, Shounen Chefs & Ichigo Cooks, Hush, Eden, and Endless Dimension. Each volume comprise of 4 chapters...]

Tanaka Manabu is a geeky student. One day on the way to school he meets a girl carrying a bloody bat. That girl is Ryuuzaki Reina, leader of the school's female delinquents. It's love at first sight. A gag manga (with a combination of 4-koma and normal page) about having a yankee dere-dere girlfriend.

Note: In the title of this series, "yandere" isn't referring to this term, but instead it combines "yankee" + "dere-dere".

Yandere Kanojo comes out in two editions. One is the "magazine version", Yandere Kanojo (Joker); and the other one is the "online version", Yandere Kanojo (Online). Both stories follow the same storyline, characters, and concepts; however, each version shows different events while not contradicting the other.

Taken from Fateful Encounters:

Prashian is an aristocratic line gifted with 500 years of life and special powers. Elan are "normal people" who live 100 years.

In this place where these two peoples live together, there is a Litra Palia living in among them without knowing her own name. Following the orders of servants, she lives off the charity provided by the Prashian among the Elan. She is but a pet.

Pu Reum Han led a normal high school life, that is until, he dreams of a lady, looking for his help to find her missing baby. But what if that baby is inside him?

Meet my neighbor - a typical fantasy novelist, more than a little scatterbrained, likes to gossip, borrow things without asking, and play MMORPGs. Oh, and by the way, he's a dragon in disguise.

Named Dragon Kim.

...Yeah...

Kato Kotono, a historian, presents a fantastic tale woven of intricate historical details set in a time of war.

Mahmut is a young Pasha serving on the council of the Türkiye Stratocracy. The clouds of war are gathering over his country as the threat of the aggressive Empire looms large. With Türkiye's council split between the warmongers and the pacifists, Mahmut begins his quest to keep the peace at any cost. As he finds himself drawn deeper and deeper in the politics of the ancient world, new enemies and allies surface. Who will prevail? What will Mahmut do if war proves to be inevitable?

Volume 4 includes an oneshot: Anastasia no Shinei Taichou.

Won the 41st Kodansha Manga Award for Shounen in 2017.

From Transcendence:
As the war-torn kingdoms vie for power in Ancient China, a deadly yet beautiful struggle also emerges in the seraglio of the King Xun, the King of Ding! In order to gain the terrifying King Xun's favor, Ninghu's family is determined to make her the future Queen, but King Xun is not interested in his concubines at all.

Not willing to become just another neglected concubine, Ninghu disguises herself as an eunuch servant to her brother Yuanren, the second most powerful eunuch and adviser in the kingdom. However, the moment that she enters the Scarlet Palace, Lingyu, the most influential and favored eunuch, suspects that she is a girl and begins to investigate her.

With the mysterious death of Lingyu's original servant, Ninghu decides to become Lingyu's personal servant in hope to approach King Xun. However, King Xun is absent from the palace, and as time goes on, Lingyu and Ninghu become more and more attracted to each other. Could they have fallen in love with each other?!