From In the Water: The continuation from Deep Love - Host. This story is about Reina, a cheerful 19-year-old single mother. During Ayu's Story, Reina was raped in a Karoke bar and eventually gave birth to a baby girl she named Ayu. Now, Reina has fallen in love, but when she told him she had a child, he dumps her! And what's worse is that her daughter, Ayu, accidentally falls down the stairs and during the surgery she becomes blind! What will happen to this once very cheerful mother?

From RebelliousArt: Being abandoned by his owners, having his mother die of starvation, a puppy who suffered lifelong separation from his siblings wandered around the city. Meeting and parting with kind people, experiencing brutal treatment from unjust people. Pao, who learned to live within the harshness of reality, awaits even more ordeals...

This is the continuation of Deep Love: Ayu no Monogatari. Now that Ayu's gone, Yoshiyuki has lost everything. After his heart surgery, he has nowhere to go...except underground. This is the story of his work as a host.

From Kotonoha: Ayu, a 17-year-old high school student, believes neither in a future nor the happiness it could bring her. By selling herself, she tries to justify her existence, which is as bleak as her heart - it’s devoid of joy, sorrow, love. Not until her encounter with a kind-hearted old lady does Ayu begin to realize the true meaning of happiness…

From Evil Flowers:

Honey Bitter meets Kodomo no Omocha. Shuri is a private detective with a special ability to read minds. She usually handles all sorts of cases, but this time she is faced with a rather unusual request. The famous actress Kurata Sana is going to play in a new film as a detective. She wants to be able to impersonate her character as best as possible so she asks Shuri if she can stick around to learn a few things that real detectives do and how they act. Despite this childish request, Shuri also recieves a more intimate request from Sana's manager, Sagami Rei, who wants to find out the reason why Sana and her husband, Hayama Akito, have decided to live separate one from another.

Deep Black (a superhero reminiscent of Batman) sets out to solve the mystery of the Glory of the Seven Sages paintings. Mystery shrouds the situation and the characters as Deep Black encounters car chases, burglary cases, bomb threats, and meets Ghost, the handsome thief who escapes and slips away from DB.

Soran's father passed away when she was ten years old and her uncle became her legal guardian, who then left her in a nunnery. Years past and he died, and at that time, she was given two choices. One was to become a sister for the rest of her life, while the other was to get married, having no choice in which man. She chooses the latter.

Fudou Jun is a highschool teacher and takes a trip with a group of students. While there, a group of martial artists staying nearby take a strange interest in the girls.
These men are actually demons and after changing into their true form break into the cabin to rape the girls. One gets Jun and violates her.
She feels her soul being torn apart and transforms into Devilman Lady. With newfound powers and strength she kills all the demons and protects the girls from any further harm.
What are these demons and why did she turn into a hybrid of one? What does this mean for her and for the rest of humanity?

From Horobi no Michi:

Clockworkers- mechanical men, created during the war as a weapon to kill as many as possible. That war may be long over, but rogue Clockworkers are still roaming about, spreading fear and death wherever they go.

Machina's a member of the CWA, an organization dedicated to the destruction of these rogue robots.

Along with Deus, her Clockworker partner, she travels the country in pursuit of these dangerous robots...

Gambling. Mahjong. Death. These are the themes of this fast-paced, undercover-agent-style manga where outrageous life-or-death gambles are made daily occurences and insurmountable odds are overcome. The most hardcore, action-packed mahjong manga you will ever see.

Included in the manga is a oneshot called Nana-chan Scrambles.

A pirate ship that cannot be sunk led by a dying Captain who will not give up. His final wish before he dies is to find the legendary Devil's Eye. And who does he appoint to lead his fearless crew in search of the lost treasure, but Olivia Soldana, a brash 16-year-old girl who can outdo any man.

Kazune joins the band KEEL and becomes their vocalist. But only after a while he is leaving to join the band BLANCA. Why is Kazune leaving suddenly? What will the members of KEEL think of him?

From ShoujoMagic:

Omori Mio is 17 years old. To help out her desperately poor family, she takes on a part-time job. Then, one night, a boy snatches a kiss from her and offers her money, saying, "I'll buy you." Who is the boy who stole Mio's first kiss...!?

An extra of S.P.Y can be found inside.

A collection of three stories of love and the supernatural:

I. Desert Storm. It's four years after the Chechnya revolt against Russian rule. Eimi finds a mysterious boy who speaks Japanese, just like her father. Because he can't recall who he is she calls him "Yuuji." And Yuuji's strange powers tell Eimi her first crush is still alive...
*Related to Silent Eye

II. The Garden of Wild Roses. Garden designer Shindo Chika is surrounded by mystery. One by one people she knows are injured or suddenly die. The only clue she has is a boy with a scarred face--who she fears is a shinigami.
*Related to Towa kamo shirenai

III. Sunset Encounter. Ryuugi dreams each year on his birthday of a girl named Fumika who he loved as a boy name Sou, and another boy named Keishi, who kills him. But when the people from his dreams keep appearing and he starts dreaming events that take place while he dreams, then he begins to wonder what exactly is happening.

From xkazemg:

Ootome Hime’s father was a jockey who dreamed of winning the Japanese Derby. One year, when Hime went to watch him race in the Derby, he died in a horrible racing accident. The man responsible retired in guilt from being a jockey.

10 years later, Hime is in high school, and she has heard that Arakawa Jin, the son of the man who killed her father, is debuting in the Derby as a jockey. She went to see him race, and was outraged to see him win! Now Hime has decided to quit high school and go to a special school for jockeys, in hopes of being able to beat Jin in a race one day. She has met a new friend and aspiring jockey along the way, a boy called Tadano Ryouhei, but she can’t let him stand in the way of her revenge!

*manga is based on a true story and the true story was done in 2ch*

It's about an Otaku guy who fell in love with this beautiful lady and tries his best to get that girl with a lot of help from 2channelers (people who goes/posts on 2ch).

This story has become very famous in Japan and I believe they now have novels, several series of Manga (both Shoujo and Shounen), movie, drama, play, etc, etc.

A collection of short, bittersweet love stories, including several incestuous ones:

1) Until the Ice Melts and Turns to Blood.
The Karaoke staff call her "the lonely girl." She rents a room all night and won't go home. Why? And what can Nogami say to help her?

2) Suicide Note.
Two charming girls, Michi and Rina, decide to end their lives this day. As the day ends we slowly discover why: both the horror--and the hope.

3) White.
It happened once, years ago... Now it's all Minako can think about. She yearns to do it again. But how does her brother feel...?

4) Yellow.
She just wants her brother to look at her--really look at her as a girl, not just a sister.

5) Blue.
They were finally reunited after their parents divorced. She can't resist her feelings for him anymore. But will she lose everything for one night of bliss?

6) Prohibition.
A walk together. A stolen kiss. Tears.

7) Moon River.
A young man studies and studies while being afraid of his own problems of failing. Until he meets a girl with a specific problem of her own by the river...

8) Bitter Cakes.
Miho meets with her friend Natsuki, who is blind. Natsuki trusts her other senses--and herself. But Miho trusts no one--yet perhaps trusts her eyes a little too much...

9) Love Horizon.
A girl sees her high school crush by chance, but something is very different about him.

10) The Day It Rained.
A short political piece regarding a young man, and a doll.

11) No Count.
A young girl finds out that her first kiss was with her oniichan.

From Hochuuami:

Four-eyed Nobita is ignored by everyone at school or they highly suspect he's an anime dork. Little does he know, sexy Ritsu has been staring at him from afar. What happens when the glasses come off and what's next... the shirts?

Note: The story is unfinished because the mangaka passed away.

Du Ming, young anesthetist in a big Chinese hospital, is haunted by the memory of Zhang Qian: a young lady coming from the same school as him , who bewitched him by the sulphurous beauty and the aura of strangeness she emits. After graduating, Du Ming stayed in touch with Zhang Qian, who writes him. Now a terrible piece of news arises: the young lady is said to have committed suicide. From Manga-News.