From Wingtip Cafe:
Rina is always busy studying and working to support herself. After the depressing news that she again lost first place in the school rankings to Julius, an expressionless guy who is her arch rival, Rina finds Milch, a little fairy girl. Later, she meets Sylvie, a Fairyland knight who has come to rescue Milch.

From Kokoro no Oasis:

Tomas is a proud and fearless assassin who has never failed a commission. So what happens when he's commissioned to kill Myra, an immortal vampire?

Mangaupdates:When a vampire is in love with a human...and you add zombies into the mix...

What would you do if a tiger skin bikini-clad alien followed you to school every day? Poor Ataru's life has never returned to normal since volatile extraterrestrial princess Lum fell for him. Now an excruciatingly wealthy and genteel rival, Mendo, adds to Ataru's torment. Not to mention an unending stream of extraordinary classroom visitors and educational materials including incompetent cherry blossom spirits, a legendary nightmare-eating tapir, and a fourth-dimensional camera that breeches alternate realities.

Note: In 1981, this series received the Shogakukan Manga Award.
Won the 18th Seiun Award for Best Comic (1987).

From Storm in Heaven:

What happens when your mother and her best friend decide that their two children will be soul mates?

It seems fate was playing a trick, though, because when the two children meet each other, neither is a girl. Since both of the two children turned out to be boys, nothing will happen, right? Though the mothers might have dropped the idea of marriage, destiny might have other plans: the lives of the two boys may be bound by a red thread.

Has characters from Dear Myself and an early (but different) incarnation of Tsuda from Color.

From Girls' Generation Scanlations:

Kikuchi-sensei rejected a love confession. The boy cursed him, the next day on the train going to his new job, every man in the car wanted him... But why were they harassing him?! If it wasn't for the young Akane, who knows what might have happened?

As a woman of a famous ninja clan, Kinuko have a trouble: she has the ability "to see through one's clothes".

Little story about Umi-chan and her hairy friends.

Included in the Katteni Kaizo Offical Fanbook.

The story of castle otaku, Ume, meeting a sexy blonde escort girl named Shigure...Is that really it or is there more? Read and find out!

After Tsubaki Ryuta is run over by an alien, he receives superpowers that he can’t control. How is Ryuta going to make use of his new powers? Being the new hero of town could be an option, but…

Raised in the hope that I would be a boy full of courage and strength, they named me "Yuu."
To be a girl filled with kindness and love; that's how my twin sister, "Ai," was raised.
That's how our parents named us-
But... Our parents' wishes were reversed.
A story about twins who risk everything to protect one another and to find his or her happiness in the switch they call twins game. (Premiered in Waai Mahalo)

Yuuki Narusawa, a college student looking for a tutoring job runs into Ryou Misaki, who is in search of a tutor who looks good in a maid uniform.

From Viz:
Rejected way too many times by good-looking (and unattainable) guys, shy Riiko Izawa goes online and signs up for a free trial of a mysterious Nightly Lover "figure." The very next day a cute naked guy is delivered to her door, and he wants to be her boyfriend!
Has Riiko died and gone to heaven? The cute guy turns out to be sweet, smart, a great cook, and lots more. And he looks like a million bucks, which is what he's going to cost Riiko if she doesn't return him in time...

*Includes two other side stories in the last volume called:

• Ohoshisama ni wa Sasemasen! (I Won't Let You Become A Star!) -
A special short story that was published in a freebie book put out in Sho-Comi. Sneaking into a boys' school to exterminate ghosts! However, what is the boy Chima has always admired doing there...!?
- ShoujoMagic

• Shounen Aromatic (Aromatic Boy) -
Kabuki Takitsugu is a boy who has the family trait of smell. He can smell anyone's fragrance and find their perfect match. One day, a mysterious girl named Hatsune appears before him, asking him to find a match for her. But, for some strange reason.. Hatsune doesn't have a scent.

From Aku Tenshi:

The world of Waq Waq is a place where machines attack the black-blooded humans, whose only defense are the Sakimori, humans chosen to partner up with the Goujin-zou, a race of machines that grow stronger when melded to humans. Shio and his Sakimori father, Al, upon entering a village, are attacked by the machines. As Al falls in battle, he leaves his son to become the new Sakimori and guardian of a mysterious young girl, believed to be god, found at the heart of the battle. Waq Waq is the story of Shio as he battles to protect what was entrusted to him by his father. Let the battle for God begin!

From Tokyopop:
It is the year 22 H.C. (Holy Century). Shinjuku is populated by monsters and goblins. Humans are endangered and the town is rife with crime. Natsuki Sasahara is a rookie at the Police Company and a newbie bounty hunter. Scouted by her superior, Batanen Fujioka the werewolf, she is half-human, half-catbeast with magical powers, and is slowly getting the hang of the business...

Kunimi Hiro and his best friend Hideo were baseball wonders... Until Hiro found out his arm was permanently damaged, rendering him unable to play anymore. A frustrated Hiro goes through the trouble of specifically finding a high school with no baseball team... Only to later on find out the doctor who examined him was a quack and his arm is perfectly fine. Hiro is quick to reinstate his dream: Creating a baseball team for his school and getting to face off against Hideo in the Koshien. The number one premier league for high school baseball.

The famous Gundam series marked top rankings in popularity for a long time. What was the secret? How was Gundam born? What’s the story behind Gundam? For the first time ever, we take a step out of the actual Gundam plotline, and we turn the perspective towards the production of Gundam; how it became a major hit surpassing its predecessor, Japanese Battleship Yamato!

This story is fictional, but the names of the characters are real, including the voice actors and director.

From Storm in Heaven:

Beat has always dreamed of being the Golden Hero of Totia. He made a pact with his best friend Ricercare (Rice for short) to join forces to annihilate the demon king in order to achieve this aim. Yet a twist of fate causes him to abandon his goals and fight alongside Rice to protect the demons. Just how will they fare against the entire nation of Totia? And can Beat protect Rice from the hero of Totia before it's too late? Cute and heart-warming, this amusing five-volume series also includes interesting side stories rich with magic and beautiful art.

A collection of stories:

1. The Boundary Between Archer and Scorpion
2. The Long, Far Road
3. Giraffes' Necks Are Too Long
4. The Imaginary Land
5. Flowers Forming a Parabola
6. Her Cat Wards Off My Bad Dream
7. Itoshii no Maid-sama (Miss Beloved Maid)
8. Capturing You
9. The Crow Woman
10. A Love Song in a Nameless Country
11. The Prince of the Night Sky and the Princess of the Morning Glow