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.

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".

Fujimori and Matsuda attended the same high school and college; unbeknownst to even himself, Fujimori had made it a habit to hang around his senpai under the pretext of enjoying the delicious sweets that Matsuda was so good at making. But after Matsuda moved to Toyko for work, Fujimori cut off contact with him. 5 years later, they reunite unexpectedly and...

From Evil Flowers:

Lisa is deeply in love with her senpai. She became a coach at her school's archery club hoping she'd get a chance to get close to the senpai she loves. One morning Lisa visits a small shrine and prays for her dream to come true... not knowing the fact that she should be careful what she wishes for...

Alcohol turn the timid guy into a bad boy? The story about the life of a guesthouse owner.

B Grade Sexy Idol's Loser Member, Ha-young and her very noticeable helpers "Ha-youngs flower path Project" Starts now!

Kaoru Sakurai, the successor of the Sakurai Japanese Dance, made a promise with her childhood friend, Shihou Takaaki, to remain together forever. However, Takaaki left to study in England. Separated for 10 years, Takaaki returns to Japan to become Kaoru's tutor. Yet, Takaaki's uptight and cool demeanor is nothing like the childhood friend Kaoru remembers. How will their relationship progress?

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: J-SiS

A series of short stories centered around a different woman in every chapter.

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?

1-3. Osoba de Misasete!

4-5. Ten ni Todoku Shiro
Both of Yuki's important childhood friends love the mountains and are in the mountaineering club, but after the older Chihiro confessed to him, the friendship among these three starts to collapse.

6. Osoba de Misasete! Extra

From September Scanlations:

Hirono Yuusa always believed he was special and destined for greatness–until tragedy struck in his final year of middle school. Now, jaded and disillusioned, he’s completely given up on ever trying to be anything more than ordinary. But when he starts to notice classmate Himekawa Ichigo struggling to do his best against all odds, he can’t help but want to cheer him on.

[from Carla Kelly's site, this is the synopsis of the novel version]

Emma Costello owes a debt of honor to one of the most dishonorable lords in the realm. The infamous Lord Ragsdale is as sinful as he is rich and as heartless as he is handsome. But after he saves Emma from a life of indentured servitude and shame, she decides it is her personal duty to save him from his reckless ways . . . without his permission.

The libertine Lord Ragsdale came to aid Emma, saving her from a lecherous brute's attempts to press her into indentured servitude. She vowed to help him reform his ways so he could marry a woman of society. But was she merely leaving the frying pan and diving into the fiery arms of this unrepentant rake? A Regency romance original.

"Don't cry, Emma," he said.

"I'm not crying," she murmured, attempting to wipe away the tears.

"Thank goodness for that," he replied, keeping his tone light. " 'Pon my word, Emma, I hope you are worth five thousand pounds."

The infamous Lord Ragsdale is as rich as sin, as sinful as he is rich, and as heartless as he is handsome. But after he saves Emma from a life of indentured servitude and shame, Emma decides that it is her personal duty to save him from his wicked ways.

Step one - Stop his drinking, his gaming, and his wild revelry.

Step two - make him break up with his mistress, the superbly sensual Fae Moullé, and transform him into a suitable suitor for the ideal wife that prim and proper Lady Clarissa Partridge would be.

Step three - don't fall in love with him.

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.

Sakugi Mitsuaki is a poor college student who gets hooked on figure modeling. In return for helping his class he receives some special putty—but the figure he builds with it suddenly comes to life. The figure is a life force called Orichalcum ("Oriharukon") that fulfills the wish of its creator. Their strange life together begins.

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