From Aerandria Scans:

Karashima is a high school boy with a beautiful voice. So beautiful that he can make anyone do anything, just by saying the words. Because of his potentially dangerous ability, he distances himself away from people but soon finds himself in the middle of various criminal investigations that he can help solve, and a girl named Kokubu who seems to be in love with him.

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?

From Aerandria Scans:

I suddenly lost my parents. Without a single relative, I must return to my father's birthplace, a village, where I can finish school. But I still cannot recover from the sadness. I am lost in doubts and insecurity. And then, on a mountain road, among the lush greenery, who do I chance to meet..?

Takeru’s mother is about to remarry. That is a great opportunity for Takeru to live with a real family and, most of all, to have a big brother, Shin. Things do not actually turn out the way he expected, though. One day, while waiting for his girlfriend, Takeru hears a couple of people discussing about money for sexual favours. Curious, he turns around to check out the chick, but it turns that both parties are male. However, what shocks Takeru more is when he realizes that the one prostituting himself is Shin, his new stepbrother… First volume extra : Shounen S. There's also a book of various doujinshi called Renai Junkie. The fifth story is a spinoff of Aitsu to Ore called Newly-Wed

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).

College student Haneji Kaoru is surprised when popular actor Aragaki Jin appears in his workplace. They were high school friends, but unable to cope with his deepening feelings for the playboy, Haneji cut all ties after graduation. But now that Aragaki has found him, he has no intention of letting Haneji go...

"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.

1-3) Seventeen year old Ringo Kinoshita falls in love at first sight with student teacher Yashachi Kai but where are the rose colored days of his first love? Unrequited love is bad enough but it seems like Kai-sensei can't stand him at all. With a prank gone wrong and a series of misunderstandings just how will these two come together or will they just be driven further apart?

4) Happy game: A boss and his subordinates peculiar love.

5) Break you: A selfish young master is going to have an arranged marriage, but he's in love with his caretaker.

6) Love is good: Shiba always gets turned town by girls because they prefer his friend Kitaro. But Kitaro's preferences are...?

1) Yurusarenai Otoko

2) Aishiatteru Futari

3) Seigi no Mikata no Koi no Yukue (Love & Battle)
Seigo, who grew up in a village, moved to Tokyo to find a job and to fight crime (apparently he has some strange superpowers), since not much happens in his village. One day his childhood friend Touma visits him and challenges him to remind him of his mission. At least that's Touma's claim...

4) Kanoko's Story

Note: Chapters 1-3 are shounen ai stories while chapter 4 is shoujo.

It's while he was waiting for a girl in the street that Aikawa-san ran into a sweet-looking boy named Okakaneko Toshinori called Neko for short. The young man just got injured while saving a cat and he asked Aikawa-san to bring him to the hospital, leaving pretty much everything to the man's care. Three days later, Toshinori calls him and asks for his help again...

From Viz:
What does it take to find your true inner self? Zen's memory has been wiped, and he can't remember if he's a killer or a hero. And a lot of people will do anything they can to keep it that way.

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.”

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.

Collection of short stories including:

• Akatsuki no Fumi
The year is 2435, and Takatsuki Minori has developed a machine that can transport historical figures from their original time to the present. His son, Akira, one day discovers that the machine has gone haywire for no reason and ends up accidentally summoning the 16th century samurai, Mori Ranmaru...

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!!

From: Easy Going Scans

Alto, a 12-year-old kid, has arrived to Porto Grande, the largest city in the country. His dream is to fly an airplane which only women can pilot. In order to fly, he disguises his gender and age and enrolls himself in an all girls school. What kind of a school life awaits him behind those closed doors?