Roa Coatl is on a mission. He must find the descendant of Quetzalcoatl to make her his wife and continue his great race of dragons for 'that day'. However, with no knowledge about love and having no interest in women, will he be able to accomplish his task in the human world?

From Tokyopop:

If you think facing a man-eating witch is dangerous, imagine having to face the one-eyed monster that ate it. In a farcical tale of hijinks and swashbuckling adventures, Rath, Rune, and Thatz become the Dragon Knights of Fire, Water, and Earth and scour a mystic landscape.

Their quests? Fortune, love, and honor. And though they may have to work together, no one says they have to like it. The Dragon Knights are put to the ultimate test when their fighting involves more than just their enemies.

From Ivyscan:

Rin, a girl fresh from the country, is discovered by Dragon Knight Grian to be the new Star Princess, whose job it is to bring good harvests to the kingdom through her prayers. Rin's powers awaken as she tries to bring the barren lands back to life in order to cure the curse that eats away at the Dragon Knights. However, more and more questions turn up!! Rin finds herself caught up in the mysterious murder case of the previous Star Princess, Fionnuala! What does the future hold for this country girl?

An RPG-ish gag manga about a half-dragon-half-human girl whose love for a popular idol/dragon-slayer leads her on a quest to find a potion that will make her fully human. Which of course leads her and her friends in a quest to defeat the terrible Demon Lord Azatodeth.

To cure his persistent virginity, Yuuto Mutsura joins his friend Naota in a trip to Aqua Eden, the "City-by-the-Sea", where brothels are allowed. Before he has a chance to become man, he is separated from his friend and accidentally turned into a vampire! Now forbidden to leave the city and forced to participate in a Public Morals task force with several beauties, how will Yuuto handle this new life?

A planet-threatening space disease, the "demon flu", has infected an inhabitant of Earth, and a space doctor is needed! The Space Medical Bureau has chosen Dr. Rurru for the job, but -- unfortunately for Minao Hitoharu, the infected patient -- she has a tendency to mishear and misspeak (with a mind towards ecchi) to comical effect.

From The Zero Alliance: No doctor can cure or figure out the cause behind the the illness of Mii’s older brother. Except for Dr. Psyche. But this mysterious doctor is perverted and even had a criminal record. Can she really trust him?

It's a short one shot story about an inventor and his niece. "Genius" or idiotic inventor Haido causes trouble with his inventions for his niece, Airi and her parents. Due to one of his inventions, Airi's crush got injured (somewhat), souring their already strained relationship. With her sudden kidnapping, what would the inventor do?

Jr. high student Izumiya is surprised by a sudden kiss from his handsome classmate Hayakawa. Leaving him completely confused, Hayakawa suddenly leaves town, but the two reunite again in high school. As the two continue to part and reunite, Izumiya's feelings start to stir...

From SCX-Scans:

It tells the story of a couple, both very innocent and in love with each other, who are now living together! Takeshi is a pure-hearted college student who is enticed by his girlfriend that has run away to live with him. Temptations ensue.

A manhua based on the Taiwanese drama of the same name:

A really unfashionable working class girl, Chen Xin Yi, desires to tie down her handsome boyfriend to be with her. Due to certain reasons, her boyfriend gets her to go on a love cruise and she started to ponder how to lose her virginity and tie down her boyfriend. Xin Yi ended up taking cold medicine which made her drowsy and caused her to go into Ji Cun Xi's room. Cun Xi is the sole male heir to his family's company and has been in love with his girlfriend, Anna, for a long time. He planned to propose to Anna on the boat, but she didn't turn up. An island owner added drugs into Cun Xi's drink, and Cun Xi became disoriented and returned to his room. Xin Yi and Cun Xi end up having a one night stand. Xin Yi later finds out that she's pregnant, and Cun Xi's grandmother forces them to get married. Will a couple forced to marry for the sake of their unborn child find love with each other?

Features Illya as a main character where she's living an alternate life as a school girl. However, she is chosen by the Magical Stick Ruby and is involved in a quarrel between Rin (Kaleido Ruby) and Luvia (Kaleido Sapphire).

From JShoujo Scans:

With the ability to see the negative emotions of people, and to see it as if they’re monsters, whose character can be different and weird, she is Deng. Because no one can understand how she feels, a wall has been built around her heart. However, after living with her innocent brother and with the help with some good friends and Karas, the person that can consume evil intensions, her world has begun to change…

From Fantasyshrine:

Youhei immediately fell in love with the actor on the late night advertisement, Satomi. After going through some random events, they became lovers. However, how will these two love birds face the upcoming events which involves costumes, a manager, a stalker and maybe an old crush!?

Just before entering the university, Yanagiba Masahiko's father died in a car accident. His mother died when he was four, which makes him now really an orphan. But even before the death of his father, he didn't have a family life, as his father was always busy or abroad.

When his mother's younger brother and his wife decide to invite him to live with their family, his life takes a turn. But it is not going to be the normal family life he is imagining for himself. What is the "terrible" secret that led his parents to break the bonds with his aunt and uncle? What could be the true nature of his cousin, Shion? And last but not least, will this "terrible" secret eventually get Yanagiba, too?

From Dragon Voice Project:
Family Complex... This is exactly what Akira Sakamoto suffers from, being the second eldest son of the Sakamoto family and the only NORMAL person. The rest of the family consists of beauties, from the parents to the eldest son and the 2 daughters. Poor Akira feels that he's totally out of place, and tries to hide this from the others... but then one day it all comes out. How will his family react to this? In this hilarious manga, every chapter is dedicated to one family member, starting with Akira. Family Complex isn't quite like anything else.

The second eldest son, Akira. Appears in another manga Princess Princess as a minor character.

Sweet and pretty high school student Keita is aggressively courting his remedial class teacher, Soga. Soga, however, thinks it's just a childish joke, and that there is no real love... From the beginning of courtship between sensei and student to their first time together, and other romantic stories! In another pairing, an ex-student meets his tutor. Adult love relationships are compiled here. Pure love and romantic love stories of innocent teens and adults who are toyed with by them.

A woman F.P. Ageha helps people in their problems.

From Tokyopop:
Sanami Matoh's FAKE, a BL favorite, is the unlikely love story between two NYC cops--who both happen to be guys...

Meet Ryo and Dee, two New York City cops with an attraction for action, and for each other! When Ryo, a soft spoken officer, joins the NYPD's 27th precinct, he's soon partnered up with Dee's a cocky, confident cop with attitude to spare.

Bunkoban edition includes the extras:
FAKE side story: Act DEE and Act RYO.

From ShoujoMagic:
Yuki and Emiri are staff at Syrup Cleaning Service, but they actually only have one true goal... and that is to find their long-lost boyfriend, Akira. Also includes the 100p story, "We Are Also In Arcadia," where Ryunosuke from "Baby Pop" plays a role.