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?

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.

Based on Massively Multiplayer Online Game (MMOG). The beautiful Goddess Altea, creator of the tranquil worlds of Lagendia, plummeted into unconsciousness after being poisoned by her jealous, evil sister Vestinel. The poison can only be neutralized by an antidote made from the source of the poison itself - Vestinel's magic grail - which has disappeared into Lagendia along with sinister Vestinel herself. Able to communicate to her people only through dreams, the Goddess Altea calls upon the Heroes of Lagendia, via all-knowing prophets, to find the grail and save her from her eternal slumber. In their quest, the bold warriors must comb the lands for enchanged Power Stones, which allow them to speak with the prophets and unlock the will of Altea through her dreams. But the hunt for the Power Stones is not for the meek, as since the Goddess Altea's poisoning, the formerly peaceful lands of Lagendia have become home to throngs of deadly dragons bent on thwarting the grail's discovery and keeping the land in despair.

Oneshot from Kimi ga Iru Shinya 2-ji 20-pun

Sugida Ippei is someone always surrounded by friends. Unlike his classmate, Tokimachi Ryoutarou, who's always reading in the back. After an awkward first & last meeting during class, they reunite years later and unresolved feelings are reignited. A oneshot about the start of an unlikely relationship.

Dragon of the Beginning and Dragon of the Last is a series of interconnected oneshots in a high fantasy setting which take place millennia apart and portray the evolution of dragon-human interaction through the point of view of different characters.

Story 1: Three people cross paths, united by a flood and a dragon. A man who lost his village. An old man who lost his child. A young woman who lost her people.

Story 2: The king is ill. In their quest to find a cure, a priest and his band of soldiers enter barbarian territory. But the herb they need belongs to the dragons.

Story 3: Dragonswood is home to dragons and the people who care for them. When a mage and his dragon are captured, however, war looms ever closer.

Story 4: After a ritual gone wrong, a dry spell hits a village once abundant in rain. The arrival of a rainmaker promises salvation, but first he must get to the bottom of a well-kept secret.

From Cinderella Story:
The crown prince of dragon clan from the deep blue sea comes to the human world to look for his bride. But he doesn't know that his bride is a twin...

A manga that is essentially the story of Enix from the time it starts working with games, until its release of the series it became known for, Dragon Quest. All the characters are real Enix employees at the time. You get to see the developers as real people, who agonize over everything, like how big to make the text boxes, what should NPCs say, etc, as well as how they get along with each other.

Many years after the fall of Zoma, the descendants of Roto left Alefgard and divided his emblem into two parts. The brother with the top half, created the kingdom of Loran. The brother with the bottom half, created the kingdom of Carmen. The kingdoms were peaceful and prosperous for many years. Emblem of Roto begins 100 years later.

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From Dragon Quest Shrine Warriors of Eden follows the story of Dragon Quest VII with a few new touches. Arus along with Keifer and Maribell discover an ancient temple on Estard Island. In the temple they discover tablets that allows them to travel to continents that were sealed away in the past and are revived in the future. Warriors of Eden now adds an elemental warrior with each elemental spirit, starting off with Arus as the Warrior of Water. Fujiwara also ties Warriors of Eden with the Roto series with a character named Bezul. He's the reincarnation of Emblem of Roto's Quadal, a sage who fought with Roto during the final battle with Zoma. His apprentice, Guren, is the Warrior of Fire. And, on top of all that, Arus' lizard is named Gregory and now speaks. From Baka-Updates: On Hiatus

This story acts as a sequel to the original "Dragon Quest Monsters" game for the Gameboy. Kurio, a child who wishes to be a hero, is thrown to a world where monsters are found all over, and is asked to become their new Monster Master hero since the great tree is withering, the monsters are going berserk, and Terry, the previous monster master, has gone missing.

Soura's out fishing with his sister, mother, father and other fishermen when they come across a storm which wrecks a ship. Sola's parents head out to rescue the survivors, though Sola questions why since the destroyed ship is a Velinard merchant ship. His father says that it has nothing to do with the fisherman, that they're fellow sailors just like them, not to just abandon them. Sola's mother, Mana tells Sola that he should always look after his friends, and as a man to be able to protect the woman he's in love with. A black dragon suddenly appears, is shown to be the one causing the storm. A white dragon also appears, and seems to be fighting with the black dragon. Sola falls into the ocean, is wondering if that white dragon is watching over him.

Manga based on Dragon Quest V.

A boy traveled the world along with his father, Pankraz. After the death of Pankraz, he is a slave forced to undergo hard labor in the building of a temple. Ten years later he finally escapes and starts a journey to find his mother, who is said to have died soon after he was born. She came from Elhaven and hence had the power to tame monsters.

"A long time ago--there was a valiant swordsman who came to be known simply as 'the hero'. The people had been suffering at the hands of an evil demon. upon arriving, the hero challenged the demon to a battle...the hero and his companions combined their powers and brought the battle to a swift conclusion. The demon had been defeated! Thanks to them, the despicable monsters who were once controlled by the demon were freed from the demon's evil volitions. With no one around to cause trouble, the island became a quiet place where everyone could live together in peace."

On a remote island in the southern seas lives Dai, a shipwrecked boy who dreams of becoming a great hero. One day, the evil demon king is revived, so it's up to Dai and his friends to stop him and the evil force that revived him. Along the way, Dai discovers the identity of "the hero", the truth behind the evil force who revived the demon king, and Dai's own hidden powers that surface in times of peril.

Insia wields the holy sword Kalsis to harvest the highest of delicacies, dragon meat, and become the greatest dragon meat chef.

The classic Chinese tale of The Three Kingdoms--with all your favorite historical figures cast as cute girls! As the Han Dynasty collapses, two mighty warriors--Zhang Fei and Guan Yu--stand strong against the tide of rebellion. But because these fighters are female, their dreams of fighting in the Imperial army are nothing but dreams... until they find a patron and like-minded brother in Liu Bei, an idealistic descedent of royalty with dreams of his own. Forging a pact, the three form a volunteer army dedicated to restoring peace, which means first defeating three deceptively adorable sisters who oppose them, and who have their own, definitely cuter, plan for China's future... One thing's for sure--history's about to get a makeover!

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?

Original Webtoon

One day, a college student named Murakami encounters a dragon named Ilsela who came from another world. Ilsela, who aims to be an 'Ichiryumae,' seems to want someone to 'adopt' them while they train in the human world...?!

Eating, sleeping, and playing with a dragon. A relaxed fantasy in a six-tatami room.

Kenji Sakuragi is a poor lawyer and ex-motorcycle gang member looking for an opportunity to boost his career. His chance finally comes with the nearly bankrupt and notorious Ryuuzan High School, referred to as "baka gakkou" (stupid school) by some. There, he sets up a special class that aims to prepare students to take and pass the entrance exam of Toudai.

Won the Kodansha Manga Award for General Manga in 2005.