Kanon Miura is a freshman in high school who belongs to the student council. Everything is peaceful until ping-pong club president Kaede Tamaki intrudes on the student council, which somehow results in all of the members joining the ping-pong club... Follow the adventures of give cute girls from both the student council and ping-pong club in this slice-of-life four-panel manga!

Friendship blossoming to love between a high school girl who tries extra hard to make up for her lack of height and a middle school boy who just looks too tall to be his real age.

This is a Thai comic.

Han Se In finds street fighter Moon Ji Soo on the street. When she tries to help him, he tells her to go away. Se In wants an apology but Ji Soo won't give one. She then slaps him and runs. Moon Ji Soo wants revenge...

Mayama Haruki and Himemiya Tsukiko have been childhood friends and neighbors for as long as they can remember, but after a girls-only meeting in fourth grade, Himemiya distanced herself from Mayama. Now in their 2nd year of middle school, Mayama has become an ero-freak who specializes in harassing Himemiya. Determined to unravel the greatest secret of girls, what happens on "that day", Mayama follows Himemiya and uncovers.

Comical sidestories from within the main series' timeline and featuring some new characters.

Collected in Volume 28 of the main series.

The hilarious misadventures of the "Sket Dan"; a couple of high schoolers who help out people as part of their club activity: Himeko, the hot-headed ex-delinquent with a soft spot for cute things and a taste for strange food; Switch, the brainy otaku who only talks via a computerized speech-application; and Bossun, the atypical leader of this looney bunch, with the amazing power to... concentrate very hard!

Sket Dance won the 55th annual Shogakukan Manga Award in 2009 for best shounen manga.

From MoonFlower Scans:

Mustuki Yoneya, a high schooler, feels insecure and jealous because her constant companion and best friend, Nishio Kyuteki is starting to pay attention to a beautiful upperclassman. Seeing the senpai's attractiveness as a threat to her wish to remain at her best friend's side forever, she tries out several attempts as she strives to become the main object of Kyuteki's attention.

Note: Original language image is not available.

This could be any girl. Imagine being a heroine of a love story. Hatori also believed that one day she would get married to her childhood friend, Rita.

But that's not how the world works! This is a hilarious comedy that honestly paints a painful unrequited love story of this young girl!

1-4) Ai ga Love Shite You nanosa
Oono is unable to properly do his uniform check job because his adoration of Takeuchi distracts him, and Takeuchi mistakes this for Oono hating him and is sad at the idea of being disliked by the model student. Thus, Takeuchi is relieved and willing to reciprocate when he finds out that it isn’t hate but instead love that makes Oono so very awkward around Takeuchi.
from hazukashiikedo

5) Shiritsu Koukou Hetarebu

6) Nare Somehen

From Viz:
Mimori Kosaka's dream comes true when she's accepted to the Meidai Attached High School and gets to wear their super-fashionable uniform! She's excited about having a fun freshman year of high school, but things don't turn out as effortlessly as she had hoped.

Includes the following side stories:
Volume 1: Basically Pure-Hearted
Volume 2: Kiss the Mike!

From today, Meguru Kinosaki is a freshman in highschool. But it's not only that she hasn't had a first love yet; she's in fact a clean girl who's never been in touch with any guy apart from her older brother Toshiya. With this pure Meguru, her classmate Yuuma falls in love at first sight. He starts a determined attack, but the over-protective big brother blocks his way! Now Meguru's days start to turn around between a big brother with a sister complex and a pushy boy...!?

Two boys, Mitsuhashi Takashi and Itou Shinji, meet each other at a salon. It turns out both boys are transferring to a new school and decide to take the opportunity to reinvent themselves. No longer will they be run of the mill high school students, they will become the biggest delinquents Japan has ever seen!

From Bliss:

While buying food at the supermarket, Sunao Morihara gets kidnapped by a strange man, Kuon Tachibana, who turns out to be incredibly rich! His motive? He wants Sunao to be his friend. However, before Sunao realizes, being Kuon's "friend" actually means becoming his wife!

From Shinnen:

The Hachiouji family hunts demons in the darkness. The heiress of the Hachiouji family, Takamichi, lost her older brother at a very young age. She isolates herself, but, one evening, two werewolf pups are given to her. After just a few years, they have grown quickly, and they even go to the same senior high school that she does!

The main character Totoki is an ordinary high-school student who leads a mundane school life.
One day, a mysterious, primitive girl, Cherry appears before Totoki! Whatever Cherry does is a mammoth class! Because of that, Totoki is being thrown around mercilessly! Is Totoki's normal life gradually changing?!

Every day is boring, too boring...
Until a witch casts her spell on it?
Masa, a second-year student at a third-rate art school, draws because he doesn't know what else to do with his life.
Then he meets Aoi, an attractive first-year girl, who seems, somehow, like she might be a witch.
Will Aoi and her secrets light the fire in the gloomy Masa's heart?
Though it doesn't seem much like living, life goes on, as young men yearn only for yearning.
Though every day seems so inconsequential, the special spark of that time of life defines what it means to be young.

Her parents are getting divorced, so Mikuriya Natsumi has to transfer to a boarding school in the countryside and live in the dorms until she graduates from elementary school. Meanwhile, her mother's in the US arbitrating with her soon-to-be-ex husband.

Natsumi is at first cold and rude to her dorm-mates and prefers to keep herself from associating with them too much, but as she learns about each of the other kids' complicated circumstances and gets into all kinds of scrapes with them, she warms up to the place bit by bit. Of course, the dorm manager and her uncle, Mikuriya Takurou, being an excellent cook and all-round stolid presence helps! Still, cohabitation's tough...

After the ninja abolition act was passed in Japan, ninjas were forced to relocate. How will 15 year-old Shinoko handle transferring to an American high school, when she can barely speak English and is still a ninja in training!?

Kei has a secret crush on Yuzuyu, the most popular girl in the classroom. One day, he is attacked by unknown warriors and the one who rescues him is Yuzuyu herself, dressed in a weird costume, claiming that she is his property and that he can do with her as he pleases from now on.