From Omari's Sister:

"It is the Taisho Era at a certain girl's school. There one young lady embodies the ambition and is the envy of every girl. The crimson ribbon adorning her marks her as the top student. She is none other than Yoshimura Sayaka. Always at her side is the chauffeur her family employs, Narutaki Shinobu. Are the two in love as rumored amongst the female student body!?"

Note: Untranslated one-shot from the first volume—"Ruka to Touzoku (Ruka and the Thief)"

1-5) Ohisama no Tamago
Bizarre club for UFOers kidnaps new student to be a member.

6) Kimi no Tonari ni (By Your Side)
In boredom there isn't a single meaning that lies behind each passing day, but that is before two highschool-aged boys stumble upon eachother.... They discuss life and death, and happiness.

7) Respective Feelings

Hikaru, a city boy raised in Tokyo, spends his every summer in the countryside with his grandmother ever since he was little. There is a girl in this town called Rin Natsukawa and she has been forcing him to play Kendo with her, or in other words, bullying him every time he comes over. One time while they were fighting Kendo, one promise was made between these two, and he has been practicing hard to fulfill that promise.

From Perfect Illusions:

Asahi, a girl, falls for Kaoru, a music freak, who happens to be oblivious to girls. At the moment, he has his heart set on buying his dream guitar but isn't old enough to hold a stable job. Asahi agrees to help him buy this guitar because she wants to get closer to him and give him the chance to get to know her. Will he be able to break his sole love for guitar and give Asahi the chance?

From Hanashi (Yaoi): The story is about the young man Takaaki (spoken as: Taka'aki) who waters a certain flower pot by chance. A small man who slept a thousand years inside the sprout comes out and needs to adapt to the new world--and to win Takaaki's heart, of course.

A heartwarming story of a sick girl in a hospital and her playmate.

Original doujinshi

From Futarikiri:
Shinozaki is dating his teacher Mizusawa. Valentine's day is approaching and Shinozaki wants a token of his teacher's affection...

Manga based on the BL game developed by Alice Blue. Each storyline has a different author:

Prologue: AKIRA Norikazu
Kurosaki x Higuchi: AMAGI Reno
Kurosaki x Shimizu: IKE Reibun
Kurosaki x Yamaguchi: SAKURA Ryou
Kurosaki x Yoshioka: TAMAQUIS Wren
Yoshioka-centric gag shorts: KYUUSHUU Danji

Low instincts, guilt, sin and fascination for the forbidden meet inside this forest full of harsh and fascinating tales. Because, after all, all human beings have secrets. Some hide feelings condemned by society and other hide the darkest and most shocking secrets...

Volume 1 ~ The Sheikh's Reluctant Bride (Damasareta Hanayome)

After her mother's death, Jessica gows up in a foster care believing herself to be an orphan. The discovery of her mother's family in Bha'Khar, a desert kingdom far away from the States, fills her with much wonder and anxiety. As she leaves for Bha'Khar, she is surprised to find a royal jet as well as Sheikh Kardahl, second in line to the throne, waiting for her. To Jessica's amazement, he says, "You are my betrothed, chosen by my family. You are my bride."

Volume 2 ~ The Sheikh's Contract Bride (Ai o Suteta Sheikh)

Beth would do anything for her twin sister, Addie, who has been betrothed to a sheikh from young age and has led a life of high expectation and heavy responsibility. Beth, unlike her sister, spent a lonesome childhood receiving little attention from her parents. The twins have grown up trusting and depending on each other. As the day of meeting the sheikh nears, Addie confides in Beth with her secret love for another man. To save her dearest Addie, Beth decides to go to the desert kingdom of Bha'Khar, pretending to be her twin sister!

From Fantasy Shrine:

“Your flowers are lifeless!” accuses the world-famous flower artist, Hikawa Naoki. Facing such merciless criticism, Kaede, heir of the prestige Akizuki flower arrangement school, has never been more humiliated in his life. Thinking his younger twin, Momiji, is more blessed with love and talents, Kaede reluctantly agrees to go to Hikawa for inspiration. However, under the elegant, masterful instruction of Hikawa, is a lesson of love disguised in seduction! And Kaede’s body and heart are awakened by love and desire…!?

From Beautiful Soup:

Story about two high school students who were child prodigy and genius. However, growing up as such talented individuals had led them to deal with a lot of pressures in life, thus, now their one goal in life is to make money....

Imari Matoba looks to be an ordinary, physically-weak high-school student. But this quiet, nondescript girl is actually an assassin - a top gunfighter with unlimited potential who can take down several armed men at once...

From Pink Cherry Blossom Scans:

A gaudy young man named Taiichi, captivated by big boobs, accidentally dented the high-class car of a Yakuza member. In order to pay for repair fees, he ends up having to make a post online, selling himself to prostitution. At the Love Hotel he was called out to, he was met with an unfashionable man with messy hair. However, this lame man told him, “I’ll give you money in exchange for your obedience.” At his wit’s end, Taiichi was prepared to lose his anal virginity, however----…

Also, the slapstick love comedy about a College student who took in a man with an amazing dragon tattoo on his back, and other short stories are compiled together.

A 16 year old boy, Hiroshi Kuzumi, has recently moved to a town in the mountains. The town is separated into new and old streets by the river, and many mysterious local cultures still remain.

Although he is sometimes confused, he enjoys his new life. One person kept her distance from him: class committee member Kushinada Nemura. In their few encounters she gave him a word of advice: "Stay away from the old streets."

Note: The title is a play on the words ookami (wolf or, with different kanji, an archaic honorific meaning god), and kamikakushi (spirited away, or hidden by a god).

In a certain star system, there is a small planet called the Onsen Planet. The entire surface is covered in hot springs, and the ones who manage them are the 4 Santa Monica siblings.

From Attractive Fascinante:
Tarzan is here to save the day! And what kind of service would you expect from a Pubic Hair Salon? Practical sex education and more from our lovely sensei and students.

1. Hot Spring Tarzan

2. Welcome to public hair salon

3. Ah ~ An interesting beetle's love

4. The man hiding in the cupboard

5. Let me remove your pants

6. I want you to say it

7. Ganso! Oshioki Gakuen

8. He's still a Tarzan even without the hot spring
continues the ch1

A collection of short stories:

1) Onozomi no Mama ni
Kaname lost both of his parents at a young age, and though he reconnected with his wealthy grandfather, the old man died within a year, leaving Kaname a beautiful exclusive apartment and a kindly butler, Hidaka. Can Kaname find solace in Hidaka care, or is his affection just that of a servant?

2-4) A Season For Three
Clueless Yukihito has always relied heavily on surrogate old brother and songwriter Reichi, but he worries about what will happen when Reichi gets a girlfriend. Reichi is pretty closemouthed about his love life, and when Yukihito finds naked male composer Oono in Reichi's bed, he thinks he's figured out why...

5) The Imitation Lovers
When Hiroaki wants to make his girlfriend jealous, he asks best friend Yuusuke to pose as his lover. Yuusuke's had a longtime crush on Hiroaki. Will he be able to help his friend without revealing his feelings?

Onozomi no Mama ni extra

A guy named Kawai is trying to get the narcisstic Kikuhara.

From DMP:

At Wataru Fujii's high school, it's all the rage to wear paired rings with the girl you love. Wataru wears one though he is single, and one day inadvertently discovers that his ring pairs up with that of tall, handsome and smart Yuichi Kazuki, the senior classman idolized by the entire school. Though Kazuki has a reputation for being kind to all, when dealing with Wataru, he is strangely harsh. Their paired rings somehow draw them together and the two alternately clash and attract, as they must sort out their budding feelings for each other.