From MangaHelpers:
One day, Matsui Sakura receives an invitation to a "Revenge Game," and decides to attend. At the location indicated, she ends up locked in a dorm-like building with four of her classmates. It appears that the Revenge Game is being run by a wealthy classmate, Saionji, who was bullied so badly by some of the students that it ruined his life. Now he is taking his revenge, in a brutal game that allows him to have one of his former tormentors killed each morning.
However, Sakura--a lonely, quiet, orphan girl--does not understand why she is there, unless it was due to her inaction in stopping the bullying of others. She's also the only one who received an invitation, while the others were abducted or tricked into attending. What is the final purpose of this game?

From Antisense Scanslations:

Sougo Amagai has no friends at school and spends day after day alone. The only thing that gives him comfort is the feather memento a girl gave him years ago during a traditional dragon dance. Her bright smile is also engraved in his memories. Even though so long has passed, that same feather will bring them together again in the world of dragon dancing.

From Nakama:

The brutish, possessive love story of a super model starved for true love?! I am the amazing, extremely popular model of Karisuma Models, KEI (Toudou Kei). I would like my roommate, and ineloquent cousin, Nanami, to be my lover! He walks around, pretending he’s really badass, but he’s a worrier at heart, and whenever I see him like that, or showing this awkward kindness that he has, I just love him, love him, love him…I’ve tried to seduce him more than once. But there’s a reason he won’t take me seriously?! Includes an extra. *heart**heart**heart*

A collection of oneshots by Hatsuharu, including I Wake Up With Your Kiss, Love Equation, The Flower That Blooms Within You and Me, and Our Sound.

Wake Up With Your Kiss
I have been looking after the helpless Haru for many years now as a childhood friend. He can't take care of himself, yet he's talented at soccer. I always watch senpai, who I have a crush on, while also keeping an eye on Haru. I don't want senpai to misunderstand my relationship with Haru...

Love Equation
I love studying, but a classmate has told me that I should take interest in love as well. Then, there's this certain boy that persistently begged for my assistance in order to tutor him, as he seems academically challenged. Reluctantly, I accepted, spending my spare time with him tutoring at the library. As I tutor him and at the same time, getting more acquainted with him, I start to have these unknown feelings for him...

The Flower That Blooms Within You and Me
I'm a very popular girl at school that makes any guy's heart flutter. I have yet to meet an interesting guy, until I encountered a certain member of the gardening club...

Our Sound
I think everyone has their own tempo. Mine happens to be slower than others, which does often get me in trouble. On the other hand, Fujishima-kun, a classmate of mine is a somewhat opposite to myself, where he is often energetic. When I heard a beautiful sound from a piano, I was surprised that it was Fujishima-kun himself that was the player. Ever since then, I was closer to him than ever before...

Having upset the president of the student council and embarrassing her in many different situations, Tsukasa is forced to do a small "punishment" by the president.

Part of Otoco Daughter Comic Anthology ~ Forced Hen ~

My world has always been a colorless bubble. But she burst it with nothing more than her smile and her words, turning it into a kaleidoscope of vibrant colors.

Sugino Miyako had always been attracted to delicious food within her sight, and eats with too much gusto. Due to her freaky eating habits, she had never kept a boyfriend. As she walks into a random restaurant, she catches the lovely omelet (where a bishounen stands outside), and she's in love (with the omelete)! The said bishounen happens to be the chef of that particular restaurant... What can possibly happen: free food (and love)?

Natori Nono is a very tough schoolgirl. She lives with her widowed mother Ayame and her younger brother Takumi in a very small apartment, where she does all the chores. Her boyfriend wants money from her, because he's really poor, too. But one day, Nono discovers that her mother remarried! She married Ichijou Hayato, the owner of the 'Ichijou Group'. Now, Nono lives there (in unaccustomed riches) with her mother, her brother, her stepfather AND her new stepbrother: Ichijou Kasuomi (his father calls him Omi-kun)!!! At first, Nono thinks Kasuomi is not nice. But what will happen next?

Included in this manga are two short stories called Sayonara Marigold and 130 cm Kara Merry Christmas.

Touch is a shounen story about two twin brothers, a pretty girl next door, and that good old pastime of baseball.

Won the 28th Shogakukan Manga Award in the Shounen category.

Yamato Keisuke, a promising freestyle swimmer, and Ninomiya Ami, a talented diver, are the offsprings of two rival families owners of confectionery shops. Two generations ago, Grandfather Ninomiya came up with an idea for an owl-shaped cake, but Grandfather Yamato quickly raised to the challenge and thought of a similar cake--but in Yamato's the owl had ears. Because they're priced the same, Yamato's extra ears were crucial, and that made the business of the Ninomiya confectionery suffer. Grandfather Ninomiya then fell ill worrying about his shop. Before his death, his last words were "I was killed by the Yamatos", and since that moment the two families have been sworn rivals.

Based on the PlayStation 2 game of the same name. A teenager who was orphaned as a young boy returns to the city of his childhood. Shortly after transferring to Gekkoukan High School, he is attacked by Shadows — creatures that feed on the minds of their victims. He soon discovers that he shares a special ability with other students at his new school. From them, he learns of the “Dark Hour,” a hidden time that exists between one day and the next, swarming with Shadows. He joins the Special Extracurricular Execute Sector (SEES), and with his new friends, confronts the threat of the Shadows.

Ai has been a jimmies (slang: girl who is plain and behind in fashion) all her life, and she's never had a boy as a friend, and much less a boyfriend. She's always lived in the shadows, and blamed others for her misfortune.

One day she becomes the laughing stock in front of her whole class, including the boy that she likes, because of her Cutey Bunny panties. That is the turning point for Ai, and she decides to become a fine woman and start over in a high school where no one knows her.

Thus begins Ai's search for love.

Includes a oneshot entitled The Day of Finals.

1) Bare the Heart (Kokoro wo Hadakani Shite)
Mina is a high school freshman with a crush on her math teacher...who also happens to be her cousin Yukiya! Mina has always been very precious to Yukiya, and at times it seems like he can see straight through to her heart, but can he ever see her as a woman and not just his cute little cousin? How long can Mina's flirtations go unnoticed by Yukiya (or by the sadistic and lascivious chemistry teacher, for that matter)?

2) A Vampire at My Neck (Kubisuji ni Banpaia)
Be careful when you go groping in the dark... you might just find a vampire! That's what happens to Hitomi. Now she's attracted to Kairi despite what he is. Or is it because of what he is? Kairi has a powerful charm... but is he too charming? Dangerously charming?

3) Hold Me, Melt Me (Dakishimete Tokashite)
Ryou is a high school sprinter who's racing for a different kind of goal--his pretty track manager, Airi! He says he wants chocolate from her on Valentine's Day, but...is that a delicious metaphor for something sweeter? Whatever the case, it melts in the mouth!

4) Examine Me Gently (Yasashiku Mitene)
Sanae just had her appendix removed. But while she waits in post-op for her surgery wound to heal, she starts to develop another malady--love sickness! And her handsome new attending physician, Dr. Touya, is the cause! What can cure Sanae's ailment? ...A sponge bath, maybe?

Omake: If you have ever wondered why Shinjo Mayu's female characters have such big breasts and why her heroines seem so young...then you must read this omake! It is a great insight into the mind of Shinjo Mayu!

Junior-high school student Rei Hoshino, a fujoshi who does not especially have any interest in the 3D aspect of life, suddenly changes when on a rainy day she takes interest in a high school student named Kei Akai and wants to get into the same high school as him. To that end, she enlists the help of her childhood friend Shōtarō Kamiyu who helps her study for the entrance examination, and diet so as to become a cuter girl. All goes according to plan, until a scheming girl going to the same school named Luna Kurotsuki makes it harder for Rei to get closer to Kei.

Chigira Ruiji is a man born with the face of a demon. Trouble follows him wherever he goes. However, he just wants to live a normal high-school life, make some friends and even fall in love.

List of Warui Series: Vol 1 Warui Koto Shitai [1-1] Vol 2 Waruiko Demo Ii? [1-2] Vol 3 Kirai ja nai Kedo [2-1] Vol 4 Koi Ja nai Kedo [2-2] --- Warui Koto Bakkashite Gomennasai [1-3 & 2-3] Vol 5 Warui Yatsu Demo Ii [1-4] Vol 6 Mujihi na Otoko [3-1] Vol 7 Warui Koibito ja Dame? [1-5] Vol 8 Kare ja nai kedo [2-4] --- Warui ko Tachi no Bansan [1-6 & 2-5] Vol 9 Mujihi na Anata [3-2] Vol 10 Sunao ja nai Kedo [2-6] Vol 11 Mujihi na Karada [3-3] Vol 12 Warui Ouji Demo Suki [1-7]

From Chibi Manga:

She was her best friend and he was her first love...she didn't plan to change that. Ayu and Kaho were friends since kindergarten. They were the exact opposite; and even if both them were cute, they hated men. But one day, Kaho found someone she loved. "why? I was the one in your heart before..."
"Let's play at football" said a boy that Ayu never saw before. But, she felt her heart beating so fast and hurting so hard. It was the beginning of her first love...

Includes oneshots:
...Suki
It happened by accident... my first kiss, with Naohara-kun... 6 years passed, but that awkward feeling didn't go away.

Zutto Zutto Daisuki (I Will Forever Love You)
In the winter of my second year of high school, I had an unforgettable love. I really, really like you very much...but at that time I couldn't protect you. I'm sorry Ema.

Omaezaki Sanemichi was born into a near-perfect existence. His family is wealthy and powerful, and he's good-natured, smart, and athletic as well! All the girls at his high-school dream of having a Cinderella-style romance with him, and, though they are desperately jealous of him, none of the boys can come up with a legitimate reason to publicly hate him.

But one day the unthinkable happens: Sanemichi's family's flagship company collapses and his father flees. Sanemichi and his former servants, the teenage siblings Natsuno and Asasuzu and the absent-minded old man Furukawa, are left without a dime. Will Sanemichi be able to maintain his gentlemanly behavior despite the humiliation and many hardships that face him?

A girl finds out her quiet classmate's secret and decides to blackmail her.

A collection of stories:

1-3. Ouji no Hakoniwa (Miniature Garden)
Once a rich young master, Yuzuru hit rock bottom after his family went bankrupt. That was eight years ago. The butler who took care of him, Iwase, has since risen to the top. When Yuzuru learns of this, he returns in an attempt to make some quick cash. But Iwase sees a kid who is still his charge. He captures Yuzuru and locks the young master in what was once his own home. Now, Yuzuru must use every trick in the book to make Iwase realize that things have changed, that he is no longer the innocent child from years ago.

4-5. Dannetsu Senjou no Kodou
A story about two boys who share a room in a dormitory.

6. Ouji no Hakoniwa (Miniature Garden)
- chapter extra -