A calm, quiet life at a new school is just what Aria needed. Unfortunately, it's not what she got! Chosen as Student Council President on her first day, Aria's attempts to just fit in are ruined by her nosy new classmates. Since she can't beat the use of her mocking former nickname, "The Lovemaster" she decides to go with it and turn the Student Council into a dating service! That's great for the school, but will Aria ever solve her own love troubles?

From Shoujo Manga Maniac:
Mimi has given birth to a son, but she won't let motherhood tie her down. She's just as fierce and independent as ever. She's determined to find out what happened to Yuan Qing, her husband and the father of her child. According to the rumors, he was killed in the war, but Mimi knows he's too crafty to let himself get killed.

It's the story of a high-school girl, Hibiki, who falls in love with one of her teachers. The two start dating, but run into a lot of trouble. Hibiki's friends cover for her, and part of the story is also about them.

Also included is a story called Tomodachi Nante Iwanaide in volume one:

A short story about Kumiko's five-year unrequited love to Kanata. Kanata has always seen her as the girl who ate a beef bowl and a good friend. Will that finally change?

From StarryHeaven:

Anjuu Sendou is a nice girl who just started her first year in the Seiryuu Academy Middle School. She is currently living away from home as a boarding student with her pet named Lime. Her father is a sorcerer and her mother is an expert in Chinese kenpo. They are both famous, especially her mother who is called Dragon Momoka.

Because of her mother’s fame, the executive committee wants Anjuu to join the student council. But the council’s president thinks that she is a weak girl, so to prove him wrong she decides to catch the school thief. When things get difficult and she wishes to become stronger, her pet suddenly transforms into a small child with wings (a pre-dragon form, because Lime isn't fully grown) and tells her about her power.

The next time the school thief appears, Anjuu, with the help of Lime, transforms into a new Saint Dragon Girl, defeating the enemies and becoming the school’s protector. Will the student council’s members find out the true identity of the warrior girl? Will Anjuu be able to keep her secret?

A troubled loli witch confides in a kind stranger.

From Viz:

Haruna Aizawa thinks that school life is just like a monkey mountain--all the monkeys form cliques, get into fights, and get back together again. The school that she just transferred to is no exception. There's even a boy called Macharu Yamashita who reminds her of a baby monkey!

From Eclipse Scans:
A school where the students make their own riches. From Models to Computer Geniuses, These students get rich on their own.
Namu goes to a school where all the elite get idolized by the non-elite. Never making it easy to get to school on time, Namu is soon helped by a new transfer student. Who gets categorized as an elite almost immediately?

From Yen Press:

Cute and charming, but not so bright, little Rika is training to become a real wizard. The first step is to find a magic staff. That can’t be too hard, can it? As Rika and Eugen journey deep into the forest in search of this wonderful staff, Rika gets lost encounters the dark sorcerer who kidnapped the princess! Will Rika be able to free the princess and become a real wizard?

High schooler Jenny You is living a dream. In the public eye, she is a delicate princess, a successful pop star, but in real life, she's a rebellious beauty ostracized by her female schoolmates. She and her classmate, Eumpa Won (One), seem to have nothing in common on the surface. Eumpa is a quiet boy, ignorant of the pop culture that has enchanted most of his peers. Having spent his childhood as a depressed prodigy in the United States, he has now resolved to lead a normal life as a regular boy. He likes a cute-but-average-looking girl, Young-ju Chae. Young-ju takes him to a pop concert, and Eumpa is exposed to Jenny's music for the first time. Meanwhile, umpa's resolution to live a normal life is challenged when his music teacher steals the young man's music and attempts to pass it off as his own... So begins the story of One...

From Intercross & Shoujo Crusade:

Chika has always seen Murasame-kun as a rival who manages to constantly piss her off. While wondering out loud to herself, her sister whom overhears Chika, gives her a perfume necklace which supposedly able to capture a guy's heart. The next day, Chika bumps into Murasame-kun and spills all the perfume. As she begins to apologize, he suddenly asks her out?!

From Anime Waves:

Meet Shizuki Maku - to say she looks "above average" would be a slight overstatement, but it's especially bad compared to her older twin brothers, the high-school heartthrobs Retsu and Tetsu. She always wondered whether or not she really belonged in her family, but things take a shocking twist when her brothers plant the suggestion that they may not be related after all.

Now she's supposed to pick one of them to be her boyfriend, all the while defending herself from all the other girls at school who want to keep her "brothers" for themselves! Life isn't easy when you're the ugly duckling!

Sonnan Ja Nee Yo received the Shogakukan Manga Award for shoujo manga in 2006.

From Shoujo Crusade:

Miyako's living her life diligently following rules, just as her deceased father wanted her to. But one day Azuma Koutarou sees her play guitar and blackmail her to join his band. How will she face it up?

There's also three extra stories that are unrelated to the main one.

Rinne, a huge fan of Buddhism, was searching for a "monk-type," a boy as calm, intelligent and diligent as Lord Buddha himself, when she set her sights on a young, handsome monk-in-training, Yuuryou. She soon learns that this kid, out of his robes, is not her dream boy, but a shallow, irresponsible lady killer who goes by Yura. Is Rinne going to give up on her fantasy, or is there more to Yura than meets the eye?

From Shoujo Crusade:

1-3) Lovers in Conflict
Because of her sister who suddenly ran away, Sagiri ends up getting married in her place. Her husband is hard to understand and is a bit of an S. What will happen to their married life?!

4) Wild Rose's Crown

Vampires have evolved and don't rely on human blood anymore. They now co-exist secretly as normal citizens even though they are still feared and discriminated against by the society. So what happens to a female vampire trying to live a normal school life when she meets the most popular boy in school and accidentally nips his neck?

During the summer when everything seemed gloomy I met Sensei and he changed my view on things. The only good trait that Azami, the bashful girl has is that she is honest and diligent. The reason why she kissed him and told him not to forget about her was because she wanted to change herself. During the new school term, the two of them meet again. This time it is at school as student and teacher...

From Aerandria Scans:
Our protagonist, Hikaru, is a member of the astronomy club at her school. On one beautiful starry night, she encounters a tall boy with blonde hair that looks almost white. However, he turns out to be...?!

1) Solely S, Absolutely M
Mamiya has gorgeous looks, terrific grades and outstanding sports reflexes. He’s very popular with the girls in his class, but seems to have no interest in them whatsoever. Sawako is the only girl who treats Mamiya like a slave. She thought there’d be no change in their relationship, but…!?

2) Jitter Bug
When Akane's mother died, she thought she was all alone in the world. Then she found out that her father is still alive and that she has three brothers. What will she do when she finds herself falling for her younger brother?

3) My Dear Cat
Hosoya Mizuki is a university student who has a boyfriend. One day on the way back from school she sees a beautiful cat with one blue eye and one brown eye which seems to mesmerize her. What will happen to poor Mizuki when she will meet a handsome guy with one blue eye and one brown eye and what about her boyfriend?

4) Bet!!
When she secretly took a picture of Saeki-kun, the no.1 popular guy on campus, she witnessed a scene she really wasn’t supposed to!? A bet has been made by him that if he can make her fall in love with him within a week, she'll have to delete that picture... who will win this bet?

5) Love Planetarium
Satoko Fukaya is heartbroken after being dumped by her boyfriend, because she was transferring to another school. While crying she is suddenly pulled into the planetarium by Nanasawa Kouki who seems to have taken an interest in her.

Extra) M's Dejection
Sawako continues to treat her boyfriend like her slave, resulting in Mamiya thinking about breaking up.

A cat went in the hot-tempered KANG Jae-Young's villa.
Forbid approach to my room and my library.
Things must be always in place.
I hate messy things and clamor.
Just follow the rules!
Darn! >v<
I won't be daunted.
It's not like that I want to live passively and say no other words but "meow meow".
Seems to be acting modestly, and all of a sudden extrudes the claws while sounding "Grr.." like a wild cat.
Kya~!
Now can love be formed?!!
Let's wait and see.
The vicissitudinous cohabitation diary~

Recently rejected Saki Momota is having a hard time getting over her first love. While picking up her younger brother from school, Saki bumps into Akai Ryuuichi; the class delinquent who's rumored to be able to shoot laser-beams from his eyes. Could this day get any worse?