From Viz:
Delve into the tortured past of Earl Cain C. Hargreaves, charismatic heir to a wealthy family full of secrets, lies and unthinkable crimes. Follow the young Cain as he attempts to unravel the secrets of his birth, all the while solving each new mystery that comes his way.

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In the Hakushaku Cain Series:

1) Wasurerareta Juliet

Includes 2 oneshots:
i) The Boys Who Stopped Time -
England, year 1918. Rupert enrolls to his new school just a few days after the murder of a maid called Noelle. He's the type that just can't sit still, so when he meets Noelle's sister, he's determined to help her find out who murdered her sister...

ii) Double -
When they were children, Ren helped his friend Emilio start his career as an actor. But when Ren didn't have any news from Emilio for two years, he decided to go to New York to look for his friend...

2) Shounen no Fukasuru Oto

3) Kafka

Includes 1 oneshot: Ellie in Summer Clothes

4) Akai Hitsuji no Kokuin

5) God Child

From Evil Flowers:

Yang Sohwa could see ghosts ever since she was little. For the past few years her visions have stopped, but now they are reappearing and she’s about to find out the tragedy that occurred hundreds of years ago on her school grounds.

A princess is on the eve of her forced marriage to the son of the man who has taken over her country. What happens when she is kidnapped by a rebel soldier? – Taken from Mangatraders

There's a great war between Rohaman and Tiroko. The queen of Rohaman unseals an ancient weapon with which they have a chance of winning the war. However, the weapon is incomplete and so they can only use a part of its powers.

One day, while being attacked, a young knight saves the queen from a powerful enemy. Seeing his skill and powers to be far greater than the average knight, she sends the soldier off with two companions in search for the missing pieces of power needed to make the ancient weapon whole.

This is based on a legend in Ancient China: Luuzhu (Green Pearl) is a beautiful pearl gatherer from a small Southern village in Ancient China. Due to her family's poverty, she was sold by her parents to be the mistress of the wealthy but abusive and old Lord Hong. However, Fate is not so cruel to the gentle Luuzhu. Just before her marriage to Lord Hong, Luuzhu met a young handsome nobleman named Jilun on the beach at night. Dazzled by Luuzhu's grace, Jilun purchased her from Lord Hong for ten bushels of pearl (a most generous amount at the time). It turned out that Jilun is one of the richest man in Ancient China! However, Lord Sima Lun, who usurped the throne, now desires Luuzhu for her legendary beauty. He is even willing to go to war with Jilun for her! Will Luuzhu become just another plaything for the rich and privileged, or will she avert from that terrible fate? Or perhaps, will her celestial beauty bring woe upon her and her loved ones?

Hugh is haunted by a dream of a strange Victorian house that he doesn't remember ever seeing in life. This dream, while not at all unpleasant, is becoming more vivid every time he enters it. His close friends, affluent Vladimir and clothes designer Vi, are concerned for his well-being, and they reach out to their wider circle of acquaintances in an effort to make sense of Hugh's predicament before it is too late.

The Missing White Dragon is a wonderful compilation of the most popular Asian folk tales and select portions of history, retold with an exotic touch of romance. Reading this book not only introduces fans to the culture of Asia, but it also gives readers insight to the bedtime stories Asian parents often tell their children at night. In essence, this beautifully written anthology shows fans the influential stories Asian children hear just as Americans children would be told fairy tales such as Goldilocks, Little Red Riding Hood, and Hansel & Gretel.

1st tale - The Missing White Dragon
2nd tale - Hannya
3rd tale - Dispel Magic
4th tale - The Romance of the Crying Thunder Sword
5th tale - A Magician's Proposal

The first time Petunia Elkwood met Todd Allison was an accident and the next time she met him was also an accident. It was also an accident that they came to live next door to each other in an apartment and it was perhaps an accident still when Petunia Elkwood found out something about Todd Allison that she wasn't quite sure what to make of.

From Tokyopop:

High-school student Moon Bin Lee has difficulty sleeping due to a recurring nightmare: he's stranded over a thousand years in the past chasing a dark-haired girl into a deep abyss.

Before long, the nightmare overwhelms him, and he is unable to tell whether he is Moon Bin, a Seoul teenager at the end of the second Millennium, or Sa Kyoung Kim, the son of a prominent warrior family in the middle of the first Millennium. People in his present-day life assume roles in his historical life as he struggles to learn exactly who he is and what he's expected to do, straddling a transmigratory portal through time and space.

In the present, his school's kendo club battles to stay in the championships... but in the past, Moon Bin finds himself at the threshold of a territorial dispute on the plains of Mongolia.

- Tsuioku (Not scanlated).

- Start Line (4 chapters)
Kei has drifted apart from his childhood friend, Hayato. When Hayato began to surpass Kei instead of following behind him, Kei started seeing his old friend in a new light. Feeling the wind, love is on the track team!

- Aigaki (Not scanlated).

From Operation Boredom:

Jin, son of a Count, has a dark past that follows him everywhere. Now a pirate, he's recently acquired a new set of slaves to sell. However, one of them, Lisa, sparks something inside Jin. Could she be the one to get through his cold, ruthless, and dark heart and see what's really inside him?

Popular for Junjou Romantica, Shungiku's earlier works were more samurai romance/yaoi of this sort. Here we have a basic spoiled brat and his bodyguard developing feelings for one another.
by Yasha

From Blissful Sin:

Ever since he was a child, Prince Uriel has always dreamed of searching for the lost city of Rowadis rumored to be buried somewhere deep in the desert. One day, he manages to sneak out of his country to join an excavation party in the hopes of learning more about his beloved Rowadis. However, the barren land turns out to be a dangerous place for the prince and he is captured by the savage Seldira clan. Follow the adventures of the young prince as he gets tangled up with the handsome leader of the Seldira and unlocks the mysteries of the desert.

1) The Welcoming Fire
During the O-bon festival, the ghost of Fuyuki's grandmother's brother's lover comes to visit, mistaking him to his lover.

2) The Sea Roar
A son of a noble isn't allowed to go outside. Yearning for freedom, he falls in love with his sensei who can take him away to the ocean.

3) Delicious Family Affair
Keito comes to live with his father and brother after his mother passed away. (they were divorced) and father and brother must try their hardest to hide that they're gay! (and that they are attracted to their own son/brother!)

4) The Dragon Knight and the Prince
Prince loves the tale of the Dragon Knight told by his butler, and goes for an adventure. A cute prince x butler story.

5) Sinner's Kiss
After snatching a bag, Jan finds himself being thrown into jail - the bag was full of drugs! Jan soon becomes an offering to the “Blond Demon” Louis!

6) Angel's Kiss
Epilogue to Sinner's Kiss

A short love story.