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...

The story sets one month after Eita and Masuzu start dating, and sets itself on a "what if" scenario where the Harem element is stronger than in the original.

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.

Eight short stories:

1. Box Seat
About the silent exchange between a man and a woman on the train.

2. Kanojo to Kare (Boy and Girl) (3 parts)
A seductive beauty gets entranced by the strait-laced school boy who helped her out.

3. Thank You
A man in black perfoms his incredible choreography on the train.

4. Motto Motto...! (More...and More!)
About the encounter between an art student and his muse.

5. Hana Seigaku Kan no Hi (Heavenly Home Ec)
Visit the most popular maid café in town and meet lots of beautiful girls and one unusual maid.

6. Aoi Udedokei (The Blue Wristwatch)
What is a man to do when he gets hold of a wristwatch that is said to enable its first-time user to rewind the past ten minutes?

7. Hana Chibo (Five-Fingered Flower)
An extraordinary case of pickpocketing disrupts a town's peaceful everyday life.

8. Haruhiko Kikou (Haruhiko the Eccentric)
In a rural village, pair of siblings decide to accomodate a travelling mystigician.

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.

Tatsuhiro moved to Tokyo to attend an art school and start his new life. In his new room, there’s a small hole in the wall. At first he can see nothing through the small hole, but one night, through the peeping hole, he saw a girl. That’s how his new life starts.

Without doing much research on the school or surrounding areas, Hibino Ryouichiro picks an art school in Hokkaido. Tricked by the school advertisements, he goes to the campus only to find out it is a desolate and cold campus. The only glimmer of happiness for Ryouichiro are the girls on campus. Just hours after meeting Kisaragi Riho, the cute girl on campus, she seduces him only to find himself outside naked after she is done with him. Feeling heartbroken and used, he finds comfort in Aso Tomoe, who lives on the floor below at the dorms. Although it is freezing outside, it is hot underneath the sheets for Ryouichiro.

A cynical romance, 'Have you been addicted to love?'

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

Imagine a senpai you don't get along with. Then imagine having to work with and live in the same apartment as him! With no vacancies in the single's dorm, newbie cop, Kaitou, has no choice but to move in with his senpai from the koban, Himuro. While he's beautiful and excels at his job, Himuro has a mouth on him and he and Kaitou fight like cats and dogs. But then one morning, surprise! A sudden embrace and a kiss!

"Give me back my first kiss!" Romance, trouble and a love triangle. A fiercely tsundere senpai versus a hot-blooded rookie equals a workplace romance!

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...

Taken from the Holy Scriptures of the Old Church of Selakiel:
"When the Earth begins to perish, the Messiah will descend from the Heaven on wings of light. Clad in darkness, he will be so little yet he will be so immense surely he shall bring salvation to everyone."

"The four saints shall appear to offer him their assistance. One will give the Messiah courage, one will give the Messiah light, one will give him wings, and one will shield him from his enemies."

Note: Chapters are numbered differently starting on volume 7, since it's a beginning of a new arc

The manga is separated into 3 story arcs with close to none relation with each other's characters.
Volume 01-13: Video Girl Ai
Volume 14-15a: Video Girl Len
Volume 15b: Video Girl - Complete Story (about Video Girl Haruno)

Video Girl Ai [From Viz]:

High-school student Yota Moteuchi is so unpopular that his classmates have given him the nickname "Dateless." So it's no surprise when the love of his life, Moemi, is not interested in Yota but instead is in love with Yota's best friend, Takashi. Yota turns to a video rental shop for comfort, but little did he suspect that the shop was magical and that the cute girl on his rented tape would pop out of the television and try to fix his ruined love life!

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.

"To Hiiragi Kouichi-kun. I'll be waiting for you after school behind the school gym. Sakuragi Umeko." These were the words written in the first love letter Hiiragi ever received. But when he meets Sakuragi, she tells him that she wants to take him to the planet R'lyeh!?! Disappointed that the love letter from the cute girl came from a nutcase, Hiiragi returns home, only to find that Sakuragai won't give up so easily. Not only that, she may have been telling the truth afterall! But then again, Hiiragi isn't such a normal guy, either...

A series of interconnected romantic comedy one-shots involving a Royal Family with 7+ sons in line for the throne and the men they fall in love with. The series also occasionally chronicles the romances of other palace employees and secondary characters. 1) Prince vs Slave - The youngest (7th) prince Shuki, gets hugged by new slave, Fuanron, that seems to know young prince. Shuki starts to bully the slave till their roles get reversed and he even takes place of the prince's teacher, Riiren. Who is Fuanron in reality? 2) Prince vs Assassin - 1st prince, Ryuuen, gets attacked by Seiran, but he defeats him and makes a deal: the assassin can try to kill him all the time, but if he fails, then he must spend the night in the prince's embrace; and so starts Seiran's life as an official consort. 3) Right-handed Priest vs Left-handed Priest - Rei has been in love with Ryuuen (the 1st prince) for years and now he has finally become the minister of the right. He thinks he can get closer to the 1st prince, but there is an obstacle, the minster of the left, Rai, that says that he is in love with Ryuuen too. 4) Mercenary vs Prince (vs The 4th Gun-Warrior?!) - 6th prince, Kagetsu, fell in love in Jin, who helped him with his wounded feet. Now he escapes from the castle everyday to tell Jin that he loves him, but the mercenary doesn't believe him. Suzaku always comes to drag Kagetsu back to the castle, but what are his real motives? 5) Scramble Showdown (?) - Short comics (one page for each) with pairing: Jin x Ryuuen x Seiran, Rai x Seiran, Kagetsu x Fuanron x Shuki, Rei x Shuki (x Rai x Fuanron), Suzaku x Riiren x Tailor. This story of 2nd prince is also featured in the manga, Ousama Game. 王子様★ゲーム