From ShoujoMagic:
A series of non-linear and interrelated stories filled with bishies and angst!
Houjou Academy is a private school, isolated from the rest of the world and attended by the heirs of rich and noble bloodlines. At the center of everything is the first son of the Hanabusa family, Kinu. Through direct or indirect involvement, he is responsible for the scars carried by the students of Houjou Academy--he is like their God. The cycle of base desire and higher love begins with the introduction of an unsullied girl named Nanaha, whose denial of Kinu's casual touch causes him to reevaluate his perception of women, and he cannot help but leave a scar on her as well...

From Fateful Encounters:

Four years ago, Prince Lulnavul fell into an eternal sleep due to an unknown curse. The king then made a proclamation: whoever wakes the prince will receive any reward they choose... but up until now, not one has achieved it. Now, Witch Sayla, scorned by the outside for being a witch, attempts this task as the 99th contender, not for the sake of the prince's hand in marriage like the princesses before her, but solely for the king's national treasure, the Sapphire of Illusions. Can a witch, who is hated even in fairy tales, be the heroine of this one? Follow Sayla as she goes to meet this sleeping prince inside his dreams.

Three students find out they all share the same name--Hiiro Takumi. They quickly become friends and make up nick-names for one another. One boy will go by Takumi and the other will go by Hiiro. The girl is called Mametaku, meaning “Small Takumi.” A strong bond is formed between the three, but what happens when the two boys both start to have stronger feelings for Mametaku? Who will she choose, and will their friendship survive?!

From Osuwari Team:

A prostitute's service in the red light district is coming to an end. Will she be able to return to a regular life?

Having been forced to leave the side of passionate Rin three years earlier, Sarasa thinks she has found happiness again in the gentle arms of Akira. But fate plays bittersweet tricks when least expected, and what may have seemed like the past has its ways of catching up.

The story is about how and why a guy goes from a worker at a dead-end job to becoming a boxer.

From Impossibility:

Miharu Tsuji is a 15 year old tomboy who finds out that her best friend likes her. Now, she must deal with the different emotions and find out what she truly feels in this all-so-strange situation.

Hinano, an ordinary girl, is in love with Katsu who dreams of becoming a scriptwriter despite the difficulties of the trade. They enjoy a perfect love until love rivals come to threaten their relationship! Sei, a beautiful boy and compulsive flirt, attempts to seduce Hinano and Juri, an intelligent woman, tries her hand at getting close to Katsu! What will become of the couples love? (By FATE)

From Awakened Memories & Fate

1-3) Love Knife
Afraid of being alienated, Asahi doesn’t say what she really thinks. Sou, who is always true to himself, has Asahi’s admiration. She is about to go to a love hotel with her boyfriend that she doesn’t even like, Youhei, and gets saved by Sou… The admiration for Sou starts turning into love. Even if she turns everyone around her into an enemy, she chooses Sou but…!?

4) Antique Girl

5) Teatime Is At Midnight

From DrMaster:

All he ever hoped for was to be one step closer to becoming a priest, but Masato Kamioda gets more than he bargained for when he suddenly finds himself as the only male student in a pilot program at an all-girls divinity school.

Consists of 4 oneshots:

3) Devil's Baby-Sitter
Nao is saved by Shouji from a group of delinquents. However, Shouji himself is a delinquent and makes Nao his slave. But after a fight in which Shouji was hit in the head, he reverted back to his 7 year old self?!

Chris is a tomboy whose relatives send her away to a boarding school after her father dies. As she grows up in Victorian England, Chris must decide whether to give in to what society expects of her, or to challenge it and follow her own dreams.

Suzuka got a tarot card reading from her friend Miyabi that she will meet her love. Could that be Konno, the guy in class D who confessed to her a year ago when they were in the same homeroom class? But before Suzuka could realize her feelings, Konno...?!

Collection of oneshots :

1) Summer of Promise
2) Reminiscence

From Perfect Illusions:

"I can't help but fall in love with that guy. But he is a playboy. Then why can't I get my eyes off him? Why is my heart racing wildly?"

When high school year 1 student, Yajima Konomi, fall in love with her classmate, Gonshou, a true love relationship starts. An emotionally-described senseful story of a young girl.

From Chuu Chuu Train:

My class’s boys made some sort of group called O.P.D. (Mew Mew Group) and that stupid idiot “Shou”. Why do I always care about him? Why does he make my heart beat so fast? This sort of emotion is definitely not friendship… probably very special… Then that means I like–?!

A series of three oneshots. Each with a romantic plot and twist of a love that shouldn't happen.
Completely scanlated by Selene Scans.

From Aerandria Scans:

Kanako is an unattractive and not very capable office lady, until the day her mother passes away and she turns out to be the sole heiress of the old and elite Kinaga house. So suddenly, Kanako has not only to uphold her duties as an heiress, but to turn into an attractive lady so that she can marry accordingly to her new status. Thanks to the family butler and her own efforts, she manages somehow, but even in the middle of her newfound glamor, her world still continues to revolve around her butler...

From Tokyopop: It's senior year, and Rica is seriously stressed out. She's got more homework, exams, and papers than she can handle, and was recently dumped by her boyfriend. In other words: Life sucks! One day, she's chatting online when she meets three classmates who hate school as much as she does. Together, they hatch a plan to blow up the school when no one is present. The countdown is on for X-Day ... Featured in this manga is a side story called The Last Supper.

Shinaka Itachi has a perfect body that seems to allure males everyday. He is tired of being harassed everywhere, so he desperately tries to be unobtrusive - but his efforts are futile. One day his classmate Jin notices and offers protection in exchange for his body.