From Easy Going Scans:

The story of three average women, and their not-so-common everyday life.

Fujiwara is the school's most admired student and captain of the volleyball team, but her reputation is at risk when she accidentally breaks the principal's most prized possession, a priceless vase. Fellow student Miu witnesses the accident, and Fujiwara begs her not to tell. In exchange, she'll do whatever Miu wants. It turns out that what Miu wants is to date Fujimaru! Although this wasn't an arrangement that either girl expected, the two soon discover that breaking the vase may have been destiny's way of bringing them together.

Kai loves his stepbrother Riku from the bottom of his heart. However, Riku treasures “the bonds of siblinghood” more than anything, so Kai must hide his feelings and instead act as a “good brother”… but skinship no longer satisfies him anymore!

The 1998 official Xenogears 4koma manga.

Volume 1:
Seto Atsushi, the student council president, is tired of spending his days in the student council where there’s nothing but boys, and decides to recruit new members, but on one condition: they must be girls! Then Ozawa Kanae, a former delinquent, shows up in the screening for the secretary position carrying a bamboo sword…?! This is a collection of five related oneshots with a specially drawn short extra, "Classified!! Student Council Report!!"

Content:
Ch.1 Seishun Trickers
Ch.2 Seishun Trickers ~Newspaper Club's Komatsu-san~
Ch.3 Clear Sky
Ch.4 Brandnew Days
Extra 4.5 Classified!! Student Council Report!!
—Freewheeling Scanlations

Volume 2:
Komatsu Akina is a passionate photographer for her school’s newspaper club. When Aoi-kun of the Student Council confesses to her, all of a sudden she has this huge decision to make. Since she has never dated before, Komatsu is confused as to whether or not she should date the extremely popular Aoi-kun, who is constantly surrounded by pretty girls.
—Dazzling Scans

Spin-off:
Sakashita-senpai no Koigokoro

A collection of oneshots.

1) Hen Ai: A oneshot that describes the "strange love" the two main characters share. Rather humorous, as it often brings up that one is rather adamant about wanting to roleplay and the other "grudgingly" goes along with it.

2) Tomari Ki (Torch): A man is stabbed and left for dead in an alley, but he is saved by a young man who has a halo and wings who calls for an ambulance. Later, the boy appears at the man's front door and claims to be an angel with broken wings, and states that the only way for them to heal is to make people happy.

3) Messiah no Yakubi (Messiah's Bad Day): A man known as the Messiah whose tongue technique is said to heal impotence takes up a job to heal a nervous-looking man, but is quite surprised by the turnout.

4) Ore no Doukyuusei ga Binkan Sugite Yabai!: A pair of high schoolers decide to experiment by giving each other blowjobs. One wants to escalate to something more, but the other isn't sure...

5) Ore no Doukyuusei ga Kagen wo Shiranakute Tsurai: Continuation of the previous story. It escalates.

6) Kyoushitsu no Yugami: A oneshot regarding the "relationship" between a teacher and his lonely, introverted student. (sequel to Yugami Hajime from the manga Yajirushi)

Ryosuke returns back to his birthplace to help run his family's vineyard after his father gets hospitalized. He has sour memories of his hometown after being shut down by the girl next door, who he admired from day one. That's the whole reason why he's never returned after moving to Tokyo, to attend College, 3 years ago. Despite his reluctant return, Ryosuke happens to be quite popular with the ladies. His sexual endeavors start off with a fling with a former high school classmate, a charming girl working at his parent's vineyard, and a sexy nurse. He even manages to allure the girl next door who he has been dreaming of his whole life but...

From Garo 1982-07.

Fun story about an arrogant, strong-chinned prince type and the shy, quiet object of his affections.

Part of Shounen Jump's celebration of Toriko's seven-year anniversary.

A gag one-shot about the lives of the bizarre race of gods, the Gods of Laughter.

An aspiring idol who is doing part-time work at the talent agency Fantasista, Kanade. One day, all the staff and talents (aside from Kanade and his company president Hayato) had left due to downsizing! In order to save the agency, at the request of the company president Kanade became an idol...How will his life change? It's a boy's coming-of-age story that started when he was young.

N/A

From Chibi Manga:

Too far, it's hard to be seen. Too close, it's also hard to be seen. It hurts and makes you feel like crying. Too sad, until it makes you laugh. That's right, this is what you call first love…the most popular guy in school falls in love for the first time in his life!

An independent collection of short stories — Ultramarine Schooldays highlights the color that evokes faithful memories, tenderness, and melancholy. These stories take place in Japan and in the West, in the past and in the present. They may involve a romance in the city, an energizing walk in the forest, the daily mundane life of a waitress working in a café, or a medieval intrigue; but what connects these stories are the powerful messages they deliver.

Volume 1:
• Tale of tail / Window to the spirit world
• Princess prisoner
• Teacher and I
• Flower's cavalier
• Pink chocolate
• Forest of wonder
• White fire (three parts)
• Albertina

Volume 2:
• Ninon's love
• Time-bell
• The Ten Swords of the North / Xenia and Reuther (five parts)
• His Music
• Pink chocolate, second act

Volume 3:
• Red-roofed house
• Pink chocolate, third act
• Twilight (two parts)
• Merry garden
• Oenothera princess (three parts)
• Snowfall night

Volume 4:
• Over the Bridge (two parts)
• Rainbow (three parts)
• Spy and Spy
• Pink chocolate, acts four and five
• Old Elm
• Farewell to Gunjyo Schooldays

From The Moon in a Box:

Before Minari knew he was gay, he convinced himself he was incapable of falling in love. Having spent the last five years settling for just sex with a friend from high school, he surprises himself by falling in love with and impetuously confessing to an acquaintance, Shinkawa. But will Minari's fragile ego be able to withstand the fear and uncertainty of a real love relationship?

While at school, Mahiro is the super straight-laced honor student. But she has a secret... after school, she works at a cosplay cafe owned by her uncle! Will she be able to peacefully live her double life after her classmate Hinata discovers her secret?

Original Webcomic

A collection of illogical plot lines.

Meet Shooto. He's a big hero fan and wants to become a hero! The problem is that he's mocked for being too short. One day, his classmate Mizushima invites him to become a "hero" at her home which is actually a criminal organization called Jackal.

Shooto then gets tricked by Jackal's leader Crea to become their supervillian, Ratman! Now the world's smallest hero will embark on his battle against heroes and villains alike!

The number of friends which Asao Ran has is 0. While she is trying to change herself, things do not go so smoothly. Within these days, a certain meeting slowly bring about changes.... From the author of the popular webcomic 'Hori-san to Miyamura-kun', HERO, comes a brand new heart-pounding youth love comedy!