From GOoC:
Data is a kind of Magical Boy series manga by Tachibana Kaimu. The two main characters, Sakura and Yuki, are on quests to gather stones with magical powers. In doing so they are also hoping to uncover the mystery as to why they both seem to have lost their memory. A lot of new characters who are also "hosts" for the stones join in the fun as the story progresses.

From Girls' Generation Scanlations:

This is a tale about Tomioka Sakito, a handsome young owner of a Dog Cafe, and Kanade Sakuza who likes small children and animals, but doesn't know how to get along with them, and instead, frightens them. When the two finally get along, Kanade finds out that Sakito is married and has a kid. What's the story behind that...?

From Yen Press:
Ten years ago, the mysterious Hell's Gate suddenly materialized in the middle of Tokyo, and the stars of the night sky were obscured in darkness. In their place, new stars emerged, each corresponding to an individual endowed with supernatural abilities. Devoid of emotion and conscience, these powerful killers have come to be known as Contractors.
But most people know nothing of the Contractors in their midst, and high-schooler Kana Shinoh is no exception. Still struggling to pick up the pieces after her father's death last year, Kana has never troubled herself with the rumors about Hell's Gate. That is, until she spots her father in the street one day. Determined to prove her father is still alive, Kana begins her search, but her mission is attracting some rather dangerous attention. Fortunately, she is rescued from the clutches of death by Hei, the most wanted Contractor in Tokyo. Though he is unsympathetic to her situation, Hei agrees to protect her as she searches for her father. But just how much should she trust the Contractor known as the Black Reaper?

The lord of darkness has decided to wake up the Dragon God that will give him the necessary power to dominate the world. But the Dragon God doesn't like his intentions and decides to entrust the mission to find the element that will revive him to the human who holds his soul.

Sequel(?): 팔용신전설 Plus

Delivery consists of a series of stories which paint a bleak and realistic picture of the women in the water trade, i.e, prostitution. Something for more mature readers with a dash of tragedy thrown in.

Story 1: Lisa
Risa, Karen and Mikan are call girls who get paid for satisfying their customers' carnal desires. They have their own reasons for doing this job. Will they be able to lead normal lives and find the simple happiness they seek someday?

Story 2: Mahiru
Since her parents' divorce, Mahiru has stopped believing in 'true love'. For her, 'love' is just a tool to earn money. She engages in compensated dating for income. Will her views about love change when she meets her classmate from elementary school after a long time?

Story 3: The End of Our Path
Miyu and Katsuki are a happy couple but they are soon going to be separated since Katsuki will be transferring to a university in the city after graduation. Miyu wants to remain together with Katsuki and so resolves to study hard to pass the entrance exam to an University in the city. But Katsuki seems to be drifting away from her...

Story 4: Yuiko
Yuiko eloped with Motoki and married him when they were not even twenty. Motoki is irresponsible and lazy. He spends all day playing video games and makes excuses for not getting a job while Yuiko juggles several part-time jobs to make ends meet. When Yuiko discovers that they are neck-deep in debt, she decides to take the high-paying job of a call girl. Will she face heavy consequences for her choice?

Story 5: Yuu
Yuu wants a life of luxury. She takes up the job of a sex-worker to earn enough allowances for buying designer dresses and branded accessories. There are times when she feels inferior and guilty but she brushes off these feelings by looking down on her parents' middle-class lifestyle. What happens when her parents find out the nature of her job?

Story 6: Before Daybreak
Touno and Saki are best friends. They maintain regular contact even after Saki transfers to another city. But all of a sudden, Touno starts receiving strange messages from Saki. Worried for her friend, Touno visits Saki and finds her caught up in a....

From Esthétique:

A teacher's pet and a model student, Young-Won Lee, at this important time right before the college entrance exam, feels her heart beating faster toward a delinquent... When she can't get a reasonable answer from books, she follows the philosophy that after being lovers for 3 months, the love hormone that confuses the lover disappears. Thus, she decides to show her interest to the delinquent-!! What did you say? You hate nerds like me? Just wait, Haru Kang! I'll become a hot, flashy babe and make you fall for me!

Nan Hui was sent off to the city to live with her mother and her nasty grandmother when she was caught smoking at her country school again. There she rescued the drunk and ungrateful, Gong Myeong from the beatings of five boys. Angry that he did not appreciate her help, she stomped on his arm and ran off…not expecting to meet him again.

Gong Myeong devised a plan with Nan Hui after being heartbroken over losing a girl he loves to his half-brother, Baek Jae Ha.

"We're not going to really love each other. We'll be a contract couple to get what we both want.”
The handsome bad boy, Cha Gong Myeong & bad girl, Lee Nan Hui are declared a couple of horror!

What will happen when Nan Hui's best friend, who is in love with her, comes to Seoul? Things get even more complicated when Gong Myeong's half-brother falls for Nan Hui.

Can this bad prince give this bad Cinderella her glass slipper? Will love blossom between these two bad personalities?

Delilah doesn't have it easy as a new pupil of an American Highschool. Because of her beauty, the playboy of the school Josh becomes aware of her. With Josh trying everything to get her, Delilah evokes the scorn of the most popular girl in school Jessica, who has her eye on Josh. As if that doesn't suffice, Delilah has a dark secret, that attracts the self-declared demon hunters aka Josh's best friends attention. Is a normal schoollife even possible like this?

A collection of romance oneshots:

Delicate ni Kiss Shite
Sachi loves her older boyfriend a lot but after three months of going out she grows more and more insecure. They meet up and go on dates, and while she does enjoy his company, why is it that he always seems to keep his distance?

I Want to Take You Away
Home tutor Anzu doesn't have complete confidence in love and relationships. However, her student Kazuki is earnestly attracted to her. When her boyfriend starts to neglect her and she asks Kazuki to be his substitute for a date, what will happen between them...?

Aquarius Lover
"I've never believed that there were such things as love at first sight until that moment..."
High-school student Kaori has fallen in love with the mysterious black-haired boy who rescued her during a school trip. She is overjoyed to spot him on their school ground but little does she know that there are two students with his face...

Seesaw Game
A poor college student is faced with a sharp-tongued high-school girl as he sweeps the floor in front of a cheesy movie poster. Despite their clashing personalities he soon finds himself sitting next to her watching said cheesy romance movie. What will happen to them next?

At a glance, Oriko Amano is a cool, handsome male university student, whilst on the other hand, Natsuo Koike is small and childlike in appearance. However, the truth is that Oriko is actually a girl, and they are both twenty years old! Dekoboko Girlish follows the daily lives of Oriko, Natsuo and the other members of their university's classical theatre group.

Sagishima Takehiko, Hokuto's distant benefactor throughout his growing up with foster parents, is a successful executive. When Hokuto turns 20, he appears in his life in person and turns it upside down in order to groom Hokuto as his successor. But is that all he is, a benefactor? Hokuto wonders whether he might not have a secret reason for his kindness to a supposed stranger. But when he finally gets to ask the question he has pondered all his life, the way Sagishima responds is... surprising.

Ninomiya is a hospital doctor for Shiondo, an unruly patient.
He keeps doing his best to fend off Shiondo's amorous advances, but how long can he hold out?

Rookie police detective, Ichiko Hanamori (AKA “Wanko”), is newly assigned to the Tokyo Metropolitan Police Department’s Squad 6 Criminal Investigation First Division. She dresses in strange Lolita fashion and gets in the way of crime scenes, but her dog-like sense of smell sometimes contributes to the solution of difficult cases. Through the eyes of the young woman who struggles to become a detective, “Deka Wanko” takes drastic measures to reform this brutal society.
Is it possible that this can this be a great touching story?

N/A

(From the publisher's description) The scene is of a heart forgetting and a body learning. When there’s a lot piled up, it’s time to resurrect the figure of the lascivious older brother...?! Other stories include baseball players playing a different game in the locker room, the love/hate disaster of soldiers left behind on a deserted island, and more. With three non-serialized stories plus the sequel to “Koihime”, there are over 100 pages of previously unpublished work in this gorgeous masterpiece collection!! **Be warned: Incest, rape, and pedophilia-Just as the chapters warn!

They are childhood friends, they have always been curious. This is why they slept together for the first time as teenagers. The thing they do today, without officially dating. But when the girl finds a boyfriend and tells her friend that she won't sleep together with him anymore, things get a little more complicated.

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…