From NetComics:
Commonly acknowledged as a genius biologist, Dr. Gangjae Lee has a conceited and blunt personality that tends to push people away. But that doesn't bother him since he is a happy husband who has been married for 7 years to Jaehee, a woman whose astonishing beauty and sexiness captivates men.

While living a double life as a college research professor, Dr. Lee secretly participates in a human cloning project run by Dr. Suh. Through numerous trials and errors, and thousands of experiments, a few clones are born. But these miracles of science are sub-quality clones whose life spans don't stretch much past 7 years.

Although their methods improve, the two doctors give birth to another sub-quality clone, but this one is of Dr. Lee's wife, Jaehee. They call her by three different names: Jaehee, Clone S04, and a name her lover and popular novelist Jinhun gives her, June. Together with Dr. Suh and Jungwoo, and hidden from the eyes of the world with the support of underground financial powers, Dr. Lee devotes himself to this project.

But one day, his wife who he treasures more than his own life, gets brutally murdered and the story takes a different turn...

English Publication

From Tokyopop:

After a near-fatal car accident, surgeons rebuilt Reiji with prosthetic parts and renamed him Himejima Kazemichi. It was a second chance at life... but there was no guarantee that his new body would last. As his artificial heart runs down, Kazemichi embarks on a journey to discover what his life really means, and live -- and love -- to the fullest. Along the way, he uncovers dark secrets about his past... including the organization that was responsible for resurrecting him...

The 'Luv Clinic' aims to cure the woes of women via its charismatic masseur - Gorou! Can Mari, former customer, win over this masseur as his assistant?

Christina is a tanned tomboy who works as a crew member on ships. One day she is suddenly approached by a handsome and mysterious man at a Mediterranean harbor town. Why would he choose to talk to her, when there are so many other beautiful girls? He tells her his name is Luc Henri, and she realizes everyone in town knows him by name. He tells her he will see her again before leaving. A few days later, while working on a ship chartered by a royal family, Christina bumps into Luc again...

English publication via Renta!

THE CELEBRITY DOCTOR'S PROPOSAL

Anna is a doctor at a clinic in a small village. During one busy summer season, Sam, Anna's childhood acquaintance and rival, comes to help out at the clinic. He is now a TV-celebrity doctor, and although Anna is glad of the extra help, he can't film the clinic for his show! They can argue about absolutely anything, but she cannot let Sam know that her heart flickers with feelings of desire whenever he shows her his masculine side...

Dying in childbirth, Yuki's mother impresses upon a friend the importance of imparting to her infant daughter the necessity of her revenge--the grudge that she could no longer carry, but which she passed to her daughter. The friend agrees to do so, and Yuki ("snow," so named for her snow-white skin) is trained to become the instrument of her mother's vengenace.
Twenty years later, Yuki is a skilled assassin. For the price of 1,000 yen she will perform murderous miracles, often proceeding through trickery, deceit, and the assumption that as a woman she poses as little threat to the criminals she is often dispatching.

From Midnight Scans:

Nene, whose mother is known as a legendary hostess, is also working as a hostess. Meanwhile, a guy, who has his father’s charisma, made it as a newcomer actor. When they meet, love starts.

Nene has been a hostess for 3 years in Ginza, and she tries to struggle for her to be called the legendary hostess like her deceased mother. One day, a man suddenly called her. Even though it's their first meeting, Nene starts feeling deja vu. Since then, the two of them have to tamper with a cruel play. Is fated love about to begin?!

Volume one consists of two stories and one of them is called My Fair Gentleman:

After being dumped by her ideal man (handsome, tall, and educated), Sugioka Yoriko, decides to jump off a cliff. But before she does, a guy literally bumps into a her. He also decided to jump off the cliff because of a massive debt his brother has left him. However, since Yoriko has left over money she saved, she decides to give it to him, under one condition: he must be her ideal man

From Harlequin Comics:
Savannah lives in the world of love and romance as a bridal coordinator, and the man who believes in none of it is Dash, a divorce lawyer. With completely opposite views on marriage, they clash over Savannah taking on Dash's sister's wedding! Whose position is stronger... and who can prove it?

PILGRIM'S CASTLE

Yvain has been working as a maid in the Sandell household since she was 15. One day she accompanies her employers on a luxury cruise ship. Who would have thought the ship would sink! Yvain is swept away by the strong currents of the sea... When she awakens, she finds herself on the Island of Lions, where the mysterious yet alluring marquess, Juan, lives...

English publication via Renta!

A collection of four short stories.

Suna no Ue no Rakuen (砂の上の楽園)
Yoru no Mori no Soko ni (夜の森の底に)
Boku wa Tabi o Suru (僕は旅をする)
Ame ni Nareba ii (雨になればいい)

Chapter 1 is the 100-page title story. It's a supernatural fantasy tale about a man with one chance to escape from death, a mysterious woman he meets, and a tribe seeking to find its way back into Heaven.

Chapter 2 deals with the mystery of a man gone missing, and presumed dead.

Chapter 3 is a very short story about a couple in the mountains who pick up a strange guest.

Chapter 4 is a longer story about the traditions binding a family, those that would break away from them, and the dark secret that holds the family in sway.

A girl with a scarred heart stops by an antique shop. There she meets the talking cat Bonten and the shopkeeper... a slightly fantastical story of bonds between cat and man.

In the Mister Millionaire series:

V.1 - Kekkon no Kokoroe (Expecting the Boss's Baby)
"I love you, not as my boss but as a man." It had been 2 months since Kate spent a night of passion with her boss, Michael, whom she secretly loves. But the next day, Michael cruelly tells her that their relationship must strictly be kept to business. Kate cannot forget about that night, and tells Michael how she feels... In fact, Michael grew up in an orphanage. He had a difficult childhood and now finds it impossible to love. Can Kate's love change Michael?

V.2 - Kekkon nante Shitakunai (Millionaire Husband)
Justin, a genius of the stock trading business is a real scrooge despite being a millionaire. He believes marriage only drains your bank account, and only contributes to charity to evade taxes. While investigating a charity, he meets a poor but charming girl named Amy. However their encounter is cut short when he suddenly coughs up blood and collapses. Amy rushes him to the hospital and while drifting between the borders of life and death, he had a dream: his friends standing at his bed side, sadly mumbling "he only thought of money, money, money", "he never learnt to love anyone". Justin is suddenly swamped with a feeling of deep regret. He prays to God, "please, just give me another chance!"

V.3 - Anata no Kioku (The Millionaire's Secret Wish)
Alisa has always been with Dylan for as long as she can remember�she gave him her first kiss as a teenager and, later, her virginity. But when Alisa finds Dylan bedding another woman, his cruel betrayal devastates her and she brings a sad end to their long-term relationship. At her worst, an accident befalls her. When Alisa wakes up, she has lost every bit of memory related to Dylan! This is the final story of a high-profile miniseries, Million-Dollar Men, which depicts the romances of self-made millionaires.

from Renta! &
here

This collection of horror short stories includes tales of murder, romance, and the supernatural.

The title story follows Natsuko, a maid at the Hagiwara mansion who bears an exact resemblance to a recently deceased woman of the household.

Other stories include a cat who watches for his master and a ghost, a work of art which leads to revenge through possessed bodies, and a woman who haunts the husband who murdered her but whom she still loves.

The mood and pacing of these stories are a kind of Japanese gothic, steeped in the culture but as clear to readers as the passions we all share.

In the Miwaku no Dokushin Kizoku (Bachelor Cousins) series:

V.1 - Kojou ni Tsudou Ai (To Marry McKenzie)
Eligible, elusive...and engaged!

Logan McKenzie liked his life exactly how it was -- with no surprises, and without a wife.

Then Logan learned his mother was about to marry for the third time, and that Darcy, his very pretty stepsister-to-be, was in danger of being hurt by that marriage. So he found himself getting involved -- not only in trying to prevent the forthcoming nuptials, but with Darcy herself...and his carefully controlled existence was turned upside down!
- from FictionDB

V.2 - Nazomeita Bijo (To Marry McCloud)
Fergus McCloud couldn't quite remember how he'd first met Chloe Fox...but circumstances indicated that they'd slept together pretty soon afterward! Actually, they hadn't. But Chloe's mission was to persuade Fergus not to publish a book that would ruin her family. What better way than to prolong the pretense of their being lovers? Only, Fergus wanted to rediscover the delights of their night "together"—and he intended to be present this time...in mind as well as body!

V.3 - Ubawareta Kuchibiru (To Marry McAllister)
Brice McAllister, the world's renowned artist, instantly falls for Sabina as soon as he meets the gorgeous supermodel's gaze. He has agreed to paint her portrait only to quiet the insistent billionaire who demanded Brice to paint his fiancee's portrait at any price. The meeting arouses his desire to draw Sabina. However, once he starts to work on the portrait, Sabina does not hide her fear and avoids his gaze. It is as if she believes allowing him to draw her is a sin...

English publication via Renta!, part 2

When Aoko was four, a meteorite struck her town. It then rained for twenty days straight, and the crater became what’s now known as the Twenty Day Lake. Two decades later, Aoko can’t remember the day the meteorite fell, or anything of her life in the town beforehand. And so she dives deep into the lake, searching for that something in her memories that she can’t let go of…

A girl makes the acquaintance of a monstrous creature who believes himself to be quite human.

From The Zero Alliance:

The temple protects the City of Sound by having hymns sung every day.
But why does the sound echo throughout the temple? Why does the song seem like a requiem?
And why are the hymns so important that…. the city will collapse if they stop?!

THE ROYAL MARRIAGE

From JManga:
"Your father just asked me to marry you." These are the words of the handsome man who appeared in front of Gabriella, the heiress to a fortune. He is Prince Ricardo of the principality of Moldoravia. "I won't marry a notorious European playboy!" Luckily, he doesn't want to get married, either, but that fact shakes Gabriella. What dramatic event will bring them together in marriage...?

English publication via Renta!

THE SPANISH DUKE'S VIRGIN BRIDE

After her father, a bank branch manager, is caught embezzling money, Grace decides to try to persuade the head of the bank, Duke Herrera, to drop the court case. However, upon arrival at Lion's Castle where the duke lives, his servant coldly turns her away. Desperate to speak to the duke, Grace sneaks into the garden, only to be attacked by a guard dog unleashed by a mysterious man! The man is, in fact, the duke. Seeing Grace pleading for mercy, the duke decides to offer her an unthinkable deal....

English publication via Renta!