From RebelliousArt:
Minato is a clumsy high school girl. When she went to the infirmary to lie down, she found a naked guy, and he kissed her!
The guy is Chihiro, a tenth grader who is one year younger than she is. Minato is very interested in him, but he already has a girlfriend. Minato plans to give up, but...?

*Includes several short stories:
• Amai Yokubou (Sweet Desire) in volume 5:
After being dumped, Maya is accused by men as being cold and frigid. An encounter with a stranger leaves her thinking differently, but somehow this stranger knows her name.

• Only One in volume 6
• Fake Lover in volume 7

Tsugumi Rinko can’t wait to escape the tedium of high school for the challenges and rewards that accompany life at a fine arts college. She only has two problems: 1) She has few social skills and fewer friends. 2) With less than nine months remaining before her crucial admissions test, she has no practical art experience. Winner of 2011 New Face Award at 2011 Japan Media Arts Festival Awards.FYI: No demographic should be listed. Originally serialized in-app and NOT in a magazine of any type.

A bunch of stories all revolving around a red haired man, Iriya. All his life he was discriminated against and called a demon because of his hair color.

1) Innocent Eyes
Iriya becomes the tutor for the crown prince of a kingdom, who actually says his hair is pretty...

2) The Moonlight and the Way of Stars (Tsuki no Hikari Hoshi no Michi)
Trouble in the palace.

3) The Beast Who Sees a Dream at Night (Three chapters)
Adventures...

Extra) Splash
Iriya's childhood.

Three delusional high school boys weave an intricate tale as they search for the meaning of life, love, and everything in between.

From Must Be Endless: A boy who is easily roped into things & a cool beauty who is a natural asshole.

From Nakama:

Hikaru and Chikage, twins who grew up in an orphanage, are taken into the home of Yukihito-san, a doctor who has been taking care of them. When they nervously open the door to the Ishiki household, what's there is... a garden of beautiful brothers. Their new family has eleven gorgeous brothers who are renowned throughout the neighborhood. Surrounded by a kind and perverted family, what will be the fate of the twins? Each day is a chastity survival game!

Even though her body has an unusual ability, Kunimi Riko is still (trying to be) a normal high school girl. One day, a guy suddenly comes to see her. He”s Tachibana Ran, the heir of the world-leading super-millionaire Tachibana family! A high tension romance between Ran, who suddenly proposed, and Riko, who turned him down.Extra:- Jigoku Kokyuu no Hitsuyou (Vol.1)Kiyoharu was trying to nap when a girl kissed him because she thought he was dead. He later learns that Touko, the girl, is always kissing someone in response to not being able to breathe and feeling suffocated.- Fureru Ondo (Vol.2)Kashuu hates being touched because of his past experiences. He will only let Sayuri-sensei, the biology teacher, treat his wounds. To him, Sayuri-sensei's touch is precise and practical without bring up bad memories

“This belongs to me now, so don’t go touching it.”

The plain and unattractive Fushimi has always been concerned about Totori, the arrogant honour student with many enemies. However, he despairs at the fact Totori can’t even remember his name. As he was planning his revenge, he’s beaten to the punch by Asahina, the infamous school bully…?! The outsider who came late can only watch on– and an unusual love triangle unveils. Also included is “Ijimete Usagi-kun”, a story about a sadistic rabbit and masochistic delinquent.

Included stories:
1-3) Ikujinashi no ...
4-7) Ijimete usagi kun

18-year-old Tsubomi has a bit of a weight complex. After graduation from high school, she takes up a part-time job at a video rental store where she is introduced to another male employee, 19-year-old Shiro, whose shifts always seem to coincide with hers. Shiro casually mentions that she reminds him of someone familiar. A few days later, while on duty, she bumps into a customer in one of the aisles. He leaves, but not without dropping his membership card, and Tsubomi finds out that his name is Nasukawa, and that he is an acquaintance of Shiro's. Meanwhile, after a song for a commercial comes on, Shiro realizes that Tsubomi reminds him of a famous model in a commercial (her "eyes", at least), who turns out to be none other than Tsubomi's cousin...?!

Kitori Miyako is a girl who is always late and only has one special skill: Jumping. What happens when she mistakes the new ballet club as the volleyball club full of popular boys? What does jumping have to do with the hot bad boy (?) Yashita? Why does she get into a fight with the stars of the Youth Ballet World?

Nora is a demon who often doesn't acknowledge the authority of the Lord of the Hell. Because of that he is sent to the human world where he becomes bound to Kazuma.

From World of Creation:
Salleal wakes up, injured, in a strange place, where a strange man she doesn't recognize, keeps her. She falls for him and his kindness, and she soon realizes she had once loved that man! But who was he? Who was she to him? And what had caused her to be in the state she was in? She had to find out.

Bouya Harumichi is a new transfer student to Suzuran all-boys high school, a place where only the worst delinquents assemble. Due to its large amount of delinquents who are hated by the general people for their inauspiciousness, similarly to crows, it is also known as "Crows High School".

Harumichi is an insanely strong fighter but has an irresponsible personality. How will he act in this new environment where everyone is a delinquent?

Due to its high popularity in Japan there are four extra manga stories related to this series and 2 live action movies.

1-5) Please Wait
Tanaka who works as a station attendant has an odd aversion to being touched. When a businessman, Doujima, finds out about his affliction, he teases him about it. Though Tanaka hates the feeling of touching others, he can't help but feel strangely attracted to Doujima...

6) Think Drip
Minamoto and Yoshino have been best friends for 10 years... but Yoshino feels slightly inferior, even though it seems like Minamoto is always chasing after him. While they are out drinking with a friend one night, he asks the two friends if they have had sex yet.... and that one question sends Yoshino spiraling.

Extra) Please Wait Extra

Summary: In the halls of the Orchid condo, two young men meet and live a love story, but the secrets she keeps can separate them forever.

From ShoujoMagic:

The new student body president, Kiyomasa Saionji, is more strict about rules and punishments--and poor Rika can't stop breaking the rules. Is Kiyomasa too strict? Is Rika just too clumsy? ...Or are the punishments a sweet temptation?

[From Manga-Sketchbook]: Female assassins mix sex and death in a pair of hard-boiled well-drawn film-noir stories of love and murder. From Baka-Updates: Two linked stories, both revolving around a deadly female assassin. In Hotel Harbour View, a Japanese expatriate in Hong Kong spends his time drinking whisky, photographing a high class prostitute and waiting for death at the hands of the assassin he knows is coming for him. In Brief Encounter, a notorious Parisian assassin is himself marked for assassination and his hunter is no stranger to him.

A collection of stories:

1. Hatsukoi Harinezumi (First Love Hedgehog)
Sora Onodera discovers he can use magic one day when he accidentally turns his older brother Riku into a hedgehog. Sora learns that his parents and brother can also use magic, and that he acquired the transformation spell because he's experiencing his first love. Now the only way to put Riku back to normal is to acquire the magic to undo the transformation, which has the condition that he must first get the girl he likes to tell him she likes him back.

2. Life for Life

3. Uno x Uno
Despite Mai and Yuu Shindou being fraternal twins and opposite sexes, they look very similar to each other and are surrounded by people who want them to act more like twins, such as wearing matching outfits or clinging more to each other. Amid this, Mai starts to realize that both of them are starting to change as they start going through puberty.

4. Simple Hot Chocolate

Includes stories about two different couples:

1) "Hitotsu no Koi no Hajimari" (Beginning of love)
When Tokita, being exhausted and starved from work, is offered some bread by the stranger, Chiba, he feels admiration towards him and wants to repay him for his kindness. That meeting signifies the start of their friendship and maybe something even more.

2-3) "Hitotsu no Koi no Ikisaki"
4-6) "Gohoubi wo Ageyou"
7) "Hitotsu no Koi no Nichijou"