A traditional girl with a grandma's mindset, Kijima Rio wants to avoid getting involved with the "ill-mannered youngsters" at all cost. As fate would have it, she must work with a "youngster". And the fun begins...

From JShoujo Scans:

Kyoko's a recent graduate who just began teaching at a local high school. Being a new teacher, she spends her days battling with the ups and downs that comes with the job. But one day, she notices that a student of hers, Sakurai, has been paying her a little too much attention, and when they wind up being in the same room after school....

also include:
1) Secret cocoon
about a girl who starts to like her deceased boyfriend's brother
2) A caress
about a girl who is in relationship with a married man and a father (love affair).

All Yoriko could remember from the night before was the red blood, the red moon, and an exceedingly bewitching red eye... The next day during class, being on the verge of remembering leaves her in a sickened state, and her classmate Kirin suggests she take a nap in the nurse's office. When Yoriko arrives, she notices nobody is around, so she decides to make use of the empty bed.

While resting, the absent nurse returns to the office to finish the job she had failed the night before: suck Yoriko clean of blood. In the middle of the struggle, Kirin comes to save poor Yoriko from the demon nurse.

Turns out Kirin and her brother Koryu are "oni."

Ayumi and Chika are always together, but as they grow up, time drifts them apart. Only when that happens does a realisation strike someone.

From Aerandria Scans:

Story 1: Sweet Tear is the Flavor of Love
After a painful experience in love, Tani Rika started to have a cynical view of love. She falls in love easily, confesses her love easily, but the moment the guy tells her that he loves her, she dumps him. This time, her new target is Tanabe-sensei, a teacher at the cram school she’s going to. Making him fall for her is just another game to Rika - or so she thought, but she started to develop feelings that she thought she had forgotten a long time ago...

Story 2: Altair's Love Letter
Sueo, a countryside girl, becomes friends with Tsutsui-kun, the lonely city boy. After that, every summer he goes to see her, without fail. Suddenly, he doesn't show up, for three years! She sends him letters, but he doesn't reply. What's going on?!

Story 3: The Boy from the Sleeping Country
Matsuri, who has been single her whole life, is on her way home from school, when she falls down with her bicycle. She's 'helped' by a mysterious boy, who's at that place everyday... He says he's there everyday because he loves that place, but... is it really the only reason?

Wait! My heart's beating? Is it because of him!?

From Intercross:
For Yui, she has no "freedom" whatsoever. Every single day, she's always been ordered around by her childhood friend, Aya, and her little sister, Chika, and she can't help but to obey them. Though, one day, she receives a love letter from a classmate! For some reason...Aya seems very annoyed by this.

Collection of shoujo-ai oneshots found in Yuri Hime and Yuri Shimai. 1. Akai Kasa, Shiroi Kasa (Red Umbrella, White Umbrella) - About two friends and their ideas about femininity. 2. Nuigurumi no Harawata (Stuff Animals' Insides) 3. Michikusa (Weeds on the Wayside) - About a girl who's pretending she likes girls. 4. Tiger Lily - An old woman remembers the past. A helpful bit of information: the two main characters are drawn as their younger selves even in the scenes that take place in the present. 5. Short Cut - If imitation is the sincerest form of flattery, then the main character of Takahashi Mako's "Short Cut" is certainly being paid a great compliment... unfortunately, she doesn't see it that way. 6. Koorizatou no Kakera 7. Natsu no Mayu - About a girl who admires her friend. Also deals with coming-of-age issues a bit. 8. Sandals - About a girl who has a crush on her best friend. 9. Kanojo no Tonari (Next to Her) 10. Otome Cake (Maidens' Cake)

Financial conglomerate Asahi, which is worth 8 trillion yen, has Hinaka as the only daughter of the head of the family, who is on the verge of death. Hinaka keeps fighting off all the looming assassins, but what will happen when she's confronted with the "strongest professional hitman," Kyouma?

From Seinagi:
Ryouta Asagiri unknowingly wanders into a country of vampires that had just recently become independent from Japan. There he meets a pretty little vampire girl named Shiren Fuyukura, who suddenly questions him and bites him, later to claim that he has become her "Minion". He soon finds out that he is unable to leave this country of vampires (The Sacred Blood Empire) and thus decides to comply to the vampire girl in becoming her "Minion".

Boys chase after the popular girl, Nao (with big breasts), but Nao has only ever had her eyes on her childhood friend—Akio.

Depending on Akio, her first love could be a sweet story, or simply a prologue to a new beginning.

From Antebellum Scanlations:

At the start of high school, Takae fell in love with Araki. However, Araki just happens to be indifferent to love. Against her better judgement, she begins dating someone else, but that relationship turned out to be a big mistake...What will become of Takae's love!?

From JShoujo Scans
Includes an extra story:
"Yori-chan has a Love That'll Never be Requited"
(Sequel to "Like Snow Falling on Harbor" from A Rose-Colored Tomorrow)

It's been over five years since Yori watched the car that his best friend and Kurita, the girl he was in love with, were riding crash into another car, leaving Kurita in a coma that she hasn't come out of since. His best friend, who had also been in love with Kurita then, has already moved on and found himself a new girlfriend.

For Yori though, time stopped that horrific day many years ago. Can his distant cousin, a spunky teenage girl who harbors a huge crush towards him, make him realize that it's time to let go?

Mitsuya Haruyoshi is a devout Christian High-school boy since his father became a priest after his mother cheated on his father. He tries to avoid lust and desire because his father wants him to become a priest.
One day his female childhood friend Sonoda Hanako, the daughter of a sweetshop owner who goes to the same school invites him home.
Turns out her family shifted business to a sex shop to counter the effects of declining birthrates on their business. She reminds him that he promised to marry her when they were children and even gave her a ring made from Aluminum foil. She also notes that Christians only do lewd stuff with people they are married to, so if she does lewd stuff to him he'll have to marry her.

Oneshot about a girl's short-lived quest to become more interesting in order to catch her crush's attention.

Zero experience points, shy and pure patissier Erio and Kai, a writer with a mysterious past. Kai is a regular guest at Erio's shop and always messes with Erio, but they are soon drawn to each other...

As well as the title cut depicting the sweet and wet love of the two, this book contains other sweet and sexy short stories.

Second story is about a teacher and his student.

Third story is about a magical cat-spirit (kettoshi) kingdom, and a young kettoshi's journey to adulthood.*

Fourth story is about Saki, a kettoshi who is suffering from an unrequited love in mating season.

Fifth story is about two kettoshi who are living as cats in the human world. One is being set up for a mating session with a female cat... will the other try and stop the situation?

Sixth story is about a boy who was wham-bam-thankyouman'd and has decided to seek his revenge by stalking his ex, who turns out to be a kettoshi. Will revenge be taken, or something else?

Extra about Kai's past.

*Could be considered shota. Boy is 14.

From Devious Breezes:

Uesugi Teppei and his father lives deep in the forest in search of a buried treasure. Isolated from society, Teppei became a wild child with no restaints until one day his uncle found him. Teppei finds out that he is actually from a very prestigious family with 5 siblings. For the first time in his life, he will have to attend school and live under his grandmother's rules. Can Teppei really adapt to his new environment?
It was also adapted into an anime that aired from September 12, 1977 to March 27, 1978.

Based on presentation from Chibi Manga:

Masumi is in love on with her childhood friend since a long time ago. But because of her pride, she can’t show him her true face...

Spin off of the popular light novel, follows in 4 koma version the spats between the honor student Kidou Eita, his "handsome girlfriend" Natsukawa Masuzu and his "hyper active" childhood friend Harusaki Chiwa.

Rather than "a story" placed on a continuity, it's a bunch of 4' skits and jokes using the well known characters.