From In.Difference:

Kazuka is your average high school girl with the exception of having an irregular and calm personality. She wakes up one morning slightly later than usual to find a red thread attached to her finger…

And for her, it isn’t “who” is at the other end, but “what” should she do about it…

Hiroshi and Takuya have been childhood friends forever. When Takuya asks Hiroshi to be more than friends, will their friendship be able to withstand? Or have they always been soul mates?

Ari is a brand new first-year high school student. Shortly before school starts, she sees a band holding a mini outdoor concert. She is struck by how great the music is. That band, Sunnyside, is currently the hottest indie group. AND, the really cute lead singer, Youta-kun, is a student at Ari’s new school! Even better, he is in her grade, and they will be in the same class! However, Youta-kun is really popular with the girls, and he happily lets them hang all over him, like he's dating them all! Youta-kun becomes really interested in Ari’s piano playing and makes an instant decision - Ari must be Sunnyside’s new keyboardist!

From Kirei Cake:

Aisupe @ is a love comedy story based on the online game “ai sp@ce” that features various well-known heroines from popular games and shows such as D.C. II, CLANNAD, and SHUFFLE!

Here we get to follow a story about Sawaragi-san from Takaga Koi daro after his jail time.

Having been sentenced to 5 years in prison for dealing drugs, yakuza Kyousuke Sawaragi just wants to finish his sentence and start a nice normal life far away from his past. So after parole, when he literally runs into former cellmate Shuuya, he's in no hurry to renew their acquaintance. Fate seems to have other ideas though, having the yakuza and Shuuya repeatedly cross paths with him. Can he really turn his back on all of it, especially if it holds out his one chance at finding true love? It's exciting romance as only the famed Saki Aida (S) can write it and Yugi Yamada (Close the Last Door) can draw it!

The story continues in the novel Hanabira Yuki (花片雪).

"Aishite Knight" is set in Osaka, and tells the story of Yaeko "Yakko" Mitamura, an 18 year old girl working in her father's Okonomiyaki restaurant. One day Yakko casually meets a little boy, Hashizo, and his odd cat Juliano. Hashizo has lost both parents when still a baby and has been brought up by his elder brother. Hashizo's brother Go Kato is the lead singer of the emerging rock band "Bee Hive". When Yakko meets Go and his friend and "Bee Hive" member Satomi Okawa an unexpected series of events unfolds.

Reimi is your poor middle school girl who yearned to meet a rich guy and marry off rich. Meet Airin, a strange girl who so happens to be rich, but doesn't even look or act like it! Watch as Reimi and Airin turn each other's world upside down! Welcome to a world filled with cuteness, craziness, and comedy!

From Midnight Scans:

Kyouko has always been alone. Her parents are always at work and she has no friends around her. One day, she found Lucifer who claims to be the Prince of the Underworld in a garden. After being rescued by Kyouko, Lucifer has decided to stake his claim on Kyouko as his wife. But why is Ishii-kun, the guy whom Kyouko confessed to suddenly wants Kyouko for himself?!

From HaruHime:

Due to her ability to tame demons, Mel has been persecuted as a witch all her life. One day, she's summoned to the castle and asked to marry Prince Claude. But Prince Claude is actually...!

Contains an Extra.

From Aerandria Scans:

Ogura Mayuri is a loner in high school, with a penchant for cooking and magic that her mother taught her. She’s already summoned a little demon familiar to help her with baking and other small chores.
But when she accidentally summons a high level demon named Beaut upon spilling tea on her skirt, he allows her to make one wish that he will grant. Mayuri wishes for the stain on her skirt to disappear in exchange for candy. The demon Beaut is outraged by the simple request, but he gets distracted by the smell of sweets - Beaut’s weakness.
Mayuri now uses Beaut’s weakness to bind him to her and do her bidding.

A love story with a devilish Pâtissier.
Matsutani Mika wants to protect the pastry shop her father left her but lately no customer visits her shop. Can Katsuya help her?

The Princess Cafe, a place where anyone can become a princess. It's there that Shiori, who just went through a break-up, meets the valet Kisaragi. He's kind, and dashing...... "I thought the he was truly the ideal guy, but it turns out he's a former gang member!" At the cafe, he's a gentleman, but, outside the cafe, Shiori is often bullied by Kisaragi. Still, she can't change her feelings towards him... The title story and other included works comprise this sweet Love Comic that is dedicated to all girls who are in love.

from Renta!

From MegKF:

Because of her fathers job, Aki was raised in England. So when she moved back to Japan she was teased horribly for being "foreign". Now Aki is also a very beautiful young woman, which makes it even harder to make friends and be accepted. After the coolest boy at school starts taking an interest in her, things only get worse. As jealous girls start to harass her, Aki shows a side of herself that even she didn't know about.

A wedding ruined by the suicide of a woman rumored to be a witch.Eiichi's affair ends in disaster as his lover hangs herself during his wedding to another woman. To the horror of the wedding guests, the dead woman gives birth to a girl. Eiichi and his new wife are forced to raise a child they don't want and don't care for. They name her Tsumiko (Great Shame).
Now as a teenager Tsumiko resembles her dead mother more every day. She must compete with a younger sister, Megumi, who is everything she is not. As tensions rise at home and at school, Tsumiko will do everything she can to make her life better.

The story opens as middle school student Takao Kasuga receives an F on a math test. But he doesn't even seem to notice because he's too engrossed in surreptitiously reading Baudelaire's "The Flowers of Evil". And the day goes downhill from there. In a moment of weakness, he finds and takes home the gym clothes belonging to sweet, pretty Nanako Saeki on whom he has a major crush. Unfortunately for Takao, there's a witness to the theft: Nakamura, who has a huge chip on her shoulder and a sadistic streak.
As the saga unfolds, we see Takao struggling to decide whether to confess or cover up his misdeeds at the same time that he tries to win over the girl of his dreams, and avoid the blackmail attempts of Nakamura, his new ”BFF.”

Closet otaku and school idol 16 year old Aiba Hina announces right at the start that she is going to quit being an otaku, but apparently she was going to stop being otaku because a manga character said he hates otaku. Fujoshi power max!

She tries to sell all her most precious otaku collections at I-books at Radio Kaikan 3F, but ends up getting seen by a classmate who was working there part-time at the register.
In order to hide her identity as an otaku she decides that the only way to salvage the situation is to assassinate the classmate who saw her in the store!?

From Attractive Fascinante:

1-3) Kazuma, a yakuza, got shot and was saved by the heir of a tea ceremony family, Shibata Yukihiro. Yukihiro, being the illegitimate son, never allowed himself to ask for anything. Kazuma was the only one that Yukihiro had wanted to protect even though the burden that Kazuma carried was too dangerous. What should they do? A very in-depth story revolving around the Japanese traditions and the underworld and how the gentle and delicate Yukihiro and a powerful Kazuma managed to influence each other to find their true self.

4) At First Sight
Liam Brink, a university student, has a bit of an usual hobby - 'observing Maddox,' Maddox being another university student. The two have never spoken to each other until one day when Liam is knocked down by another student and his glasses are broken.

5) Cry for the Sun
Ethan's father just passed away. During the funeral, Ethan is torn by feelings of hatred towards the man that was absent through much of his life, though he doesn't understand the root of these feelings. Suddenly, he notices a mysterious weeping man at the edge of the funeral service that he doesn't recognize, but deep in his heart he somehow knows him - how can this be?

6) Garance
A continuation of Kazuma and Yukihiro's story.

From StarryHeaven:

The era is the Taisho period (1912-1926). Kaibara Aria, who wishes to become a pianist, takes the examination to become a preparatory student at the Tokyo School of Music. The passion in her playing overwhelms her surroundings, like a ripple on the surface of water. It was then that Aria had an encounter with the son of the Nishimikado noble family, Natsuo, and learns a shocking truth... The youth of the maiden blessed by the god of music in this stream of musical romance!

There's 2 versions, one tankoubon and one bunkoban.

The tankoubon includes:
「暁に立つライオン」 - Akatsuki ni Tatsu Lion (published in Betsucomi, 05-07/2003)
「トルコ取材記」 - Turkey Shuzaizakki (Omake, 06/2003)

The bunkoban version also have the one-shots:
「海に墜ちるツバメ」 -Umi ni Ochiru tsubame
「記憶の足音」- Kioku no Ashioto
Both also present in Umi ni Ochiru Tsubame.

Resume from ShoujoMagic:
Izumi Erina is a senior in high school. She only has one living relative - her older brother Takashi. However, Erina receives an arrest notice for Takashi one day, who is supposed to be in Turkey at the time!! In order to look for Takashi, a mysterious man Sinclair came to Japan and brought Erina along with him. What is the "Black Trap" that awaits Erina in a foreign country...?! A shocking romantic suspense work filled with waves of love and hate!!

Miya's brother Junichi has fallen in love with that natural queen Morishima Haruka. And with Junichi longing to date Haruka on the upcoming Christmas Eve, Miya, who has always cheered him on, is now...