In the Renai Chuudokuteki Senjutsushi series: 1. Senjutsushi wa Kujikenai - Renai Chuudokuteki Senjutsushi 2. Senjutsushi wa Koi ni Oboreru 3. Senjutsushi wa Netsuai Sareru 4. Senjutsushi to Majin no Shiro 5. Senjutsushi to Fukushuu no Koto 6. Senjutsushi to Saiyaku no Tsubo (1) 7. Senjutsushi to Saiyaku no Tsubo (2) In a certain time, in a certain land, there was a beautiful magician with long, trailing silver hair. His name was Liu Li Xian, a man whose beauty was so great and his magic so powerful, others believed him to be not of this world. However! He had a certain "illness." Which was that he really, really, REALLY liked pretty men. He found them IRRESISTIBLE! Liu Li Xian's grand adventure in seeking out prospective lovers begins!

Tokiwa Kanenari likes to masquerade as a substitute science teacher, but he's actually in the business of dealing with the spirit world. And there are spirits in all sorts of things around him, from amber necklaces to unfinished paintings and even abandoned satellites.

The manga inspired TV drama series broadcasted in 1991.

by Nornir
Gray Town – where all the buildings are gray, except for one single house, built who knows when - the Red House.

The legendary school horror manga has been revived! Girls go hunting for mermaids to win their true love. Featuring very untraditional mermaids.

A parody of 19th-century romance, starring an eccentric Indian prince Rashanu (who also appears as a supporting character in Patalliro! by the same mangaka).

Rengo Orii loves superheroes. Other people say that his favorite, Megalith, is an old man who should just retire already, but as far as he's concerned, anything Megalith does has to be true justice. One day, a bizarre encounter leaves Rengo with the power to transform... not into an awe-inspiring superhero, but a horrifying insectoid monster! Rengo realizes that even though he might not look the part, he can still be the superhero he's always dreamed of being now, but it turns out copying Megalith's signature knee to the face isn't such a good idea when you're strong enough to kick someone's head off! Can a monster with a little kid's sense of justice really be a hero!? 

From Dazzling Scans:

In the late 19th century, the citizens of London began hearing news of a brutal street slasher and vampire. One day, Alan—a writer—meets a young woman named Marie who was attacked by this street slasher. He agrees to let this girl stay with him since she has lost her home, but ever since that day Alan begins suffering from strange dreams. In fact, Marie is a vampire! As they grow closer, Alan discovers a terrifying secret about his new friend. This is a story about love and the reincarnation of vampires.

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This series is a set of several extremely short pieces: usually between 2-4 pages in length. They vary wildly in mood, character and art style, and the detail is often stunning.

Note: The manga was serialized in Kodansha's novel and manga fiction magazine, which does not targeted a specific demographic rather the general reader.

Karam's new teacher, Mr. Lee, is also her mother's new boarder. Why does he seem so interested in Karam, and why does she feel some strange connection to him? This is a story of past and present lives, love, jealousy, sacrifice, and salvation.

From Storm in Heaven:

A collection of four short stories.
Story 3: Chihiro and Chiaki are twins with a special ability; Chihiro sees strange visions triggered by the things around him, but it's Chiaki who, without actually seeing them, knows what the visions mean. The trouble Chiaki has caused by blurting out the truth behind the visions has caused Chihiro to shut himself away to keep the visions from coming. But then, one day, his brother asks him to step outside...

THE BADGUYS is a superhero comedy heist comic with a cast of characters supremely out of their depth. Dealing with daddy issues, bad breakups, decades-old grudges and profound professional inadequacies, the whole endeavour is pretty much a foregone conclusion. Badguys never win: There are rules, after all.

Yoshika and Yukina are best friends at school. Yukina is both physically beautiful and possesses a kind and gentle personality that charms everyone who knows her, including her wonderful boyfriend. Yoshika is less traditionally beautiful and has a less alluringly feminine personality. In addition, she desperately likes Yukina's boyfriend. While Yoshika does care for her friend, she is also deeply envious of her. One day, a demon in the form of a house cat appears to Yoshika and offers her the supernatural power to take whatever she wants from her friend. How far will Yoshika let her jealousy of her best friend take her?

Four thousand years ago, the planet Roon was frozen by the ruling race, Kama, during a raging war. The Kama then emigrated to a neighbouring planet. But now the ice is beginning to thaw, and return to the home world is fast becoming a possibility for their descendants.

Dulk is a young man who wields exceptional power, in training to become a shaman of sorts. Since his early years, Dulk has experienced vivid dreams about Roon, though he has never been to - or even seen - the planet.

When he finally gets the chance to visit the once-frozen wasteland, he will discover the powerful destiny that lies in store for him, buried beneath the rubble of Roon's mysterious history.

From Storm in Heaven:

Supika studies at a school that teaches the magics of astrology and astronomy. Astrologers like Supika can use three magic items, a sun, moon, or star. Supika uses the star Spica (Virgo's brightest star), which is the most powerful item she can use at her level. In the school, however, women are stuck as third class students--they aren't allowed to reach the higher levels boys can. Of course, Supika doesn?t really agree with the obsolete rule and tries to get more powerful in order to become first class. Amano, the son of the principal, doesn?t agree with Supika?s free spirit and tries to stop her from becoming a first class astrologer...

Also inclued a story called Kaede.

Mio is an girl with above normal hearing, which has affected her all her life, she can hear all the war that's happening inside her country. But when Rico, a girl with a 3 minutes memory span, comes to save her and her country, Mio knows what she must do.

The evil Solomon's Child are turning people into Red Dust and it is up to our heroes Shik and Ryoji Kamishiro and the rest of the gang to stop them. Will our heroes stop the Solomon's Child? Or is there something bigger waiting for them on the other side? Read and find out.

Kishi works in the anime industry but doesn't really like his job. During one of his regular disappearances, he runs into a rather mischievous cat who follows him home and begins stalking him wherever he goes!

From Aerandria Scans:

A collection of six short stories, each with its own supernatural girl.

1) Shijima
A fortune-teller who exists by sealing other people's memories and living it as her own.

2) Dismounting Midway

3) The Passing...

4) Falling Sakura in Profusion

5) Beside the Water

6) Time's Aftertaste