From Pinoymanga Scans:

In the 24th generation of Kings of the Joseon Dynasty, a boatman known as Seo-mok unknowingly helped a mysterious woman and Japanese spies who were disguised as rich Korean men to cross a river. But after crossing the river, they tried to kill Seo-mok... Left with no choice, Seo-mok then took the woman hostage--and soon, secrets began to unfold.

A twisted old man, gifted with extrasensory powers, silently holds sway over an entire block of apartments. The occupants are puppets for him to control. Life is his to give...and to take. But suddenly there is a new voice in his head, and before he knows it, a young girl with her own battery of psychic abilities has arrived to challenge him! Soon, the sprawling complex becomes a battleground between two minds possessing incredible, unimaginable power.
Note: Won the 15th Seiun Award for Best Comic (1984).

Related:> Diabolik Lovers Prequel ( http://www.batoto.net/comic/_/comics/diabolik-lovers-prequel-r10050 )

Chio-chan is a gamer and a high school girl who gets into some interesting predicaments on her way to school. For instance, she was once running late for class due to staying up all night playing a game like Assassin's Creed, and her usual route was blocked. Prompted by the previous night's gaming, she decided to take to the rooftops, a strategy that does not work quite as well in real life! She also faces more mundane difficulties, like awkwardness in interacting with a friendly acquaintance met by chance on the way to school. Join Chio on her funny and unusual daily journeys to get from home to school on time.

A story of a man and a woman undoing their curse.

In a future where cyborgs are more common than fully flesh and blood humans, a girl goes out to seek oil when her family's ration gets cut off. She needs to get it quickly so her grandmother's heart doesn't burn out, but no one has ever gone up above to the ration center and returned alive.

From Omari's Sister:
Yukari, at the tender age of 17, is a renown Edo period novelist who claims visions of Yoshihara during the Edo period gush from his heart. After meeting Mahoro, a girl he swears he knows and has met before, Yukari finds himself falling asleep and waking up in the Edo period as an Oiran. The past and present collide in this time traveling romance.

The Premise is a story about the moral contradictions and ethical dilemmas that arise when two policemen discover a criminal gang, commonly known as “The Executioners Sect”, which wants to enforce justice through a horrible method.

The day of the coronation has finally arrived, but peace is nowhere in sight. The King is still under attack by a mysterious faction that is trying desperately to put an end to his life.

And this time around, the trials facing them might just be too great to overcome. His Majesty and his "Right Eye" both have secrets they're keeping from each other. Secrets that could tear them apart... And destroy the kingdom.

After Shiori loses faith in her piano playing, she meets a weird Physics Professor who asks her to teach him to play the piano.

A collection of stories:

1) Ano Hi, Seifuku de (That Day, in the Uniform)
I haven't got myself used to this adult-like appearance with some nostalgic flavour of youth.

2) A Senpai
Body and mind think different things. But which one is true? A junior and senior love triangle.

3) Chuugaku 3-nensei (Middle School, Third Year)
There is a pervert in the male restroom in the book-store. Beware!

4) Hadaka no Boku (Naked Me)
Being shaved, becoming naked, the hidden feelings

5) Tenkousei (Transfer Student)
The secrets under the uniform, that none of the classmates knows.

6) Nikoichi
God knows when my childhood friend become much tinier than me. We have been through the heights and lows together, and now is my start with that childhood friend.

6.5) Extra to Ano Hi, Seifuku de - Konya, Ano Hi ni
2 years have already passed since that night.

A cat falls in love with a human who once took care of him. Wanting to stay by the young man's side, he agrees to a deal that would allow him to take human form--except in the eyes of the one he has feelings for! What will become of this love?

1) Usotsuki Ookami
Satsuki is a counselor at a prestigious boys' high school. In fact, she is an ordinary high school student. Though she wishes that it will not be revealed, Tsuburaya, a problem student of the school, hangs around her...?!

2) Miscalculation of the Little Demon
His Family is about reach as mine, but he is 9 years older and already turned me down. then why is he here again?

3) Together with Doggie
They are interested in me because of my face. I'm tired of younger boy's confessions but this dog like boy won't leave me alone ...

4) Deli Bunny Girl
Working in a cosplay cafe for bunny ear maniacs when I'm just a high schooler! He find outs, what should I do now?

5) Non-sugar Darling
We've been dating for 1 year now, but it looks like there is no love anymore.

Collection of oneshots:

1) Mahou Tsukai no Namida
Yoichi dies nearly every day... but every time he wake up just with a dream of his death. And why his beloved Shiraku-san appeared in these dreams?

2) Mahou Tsukai no Shippai
Yoichi is now living with Shiraku-san, but his air-headed behavior is still causing problems.

3) Koi to Obake no Sodatekata
Yorito's parents and their familiar Rurimaru died ten years ago, fighting against evil majinas; and his older brother was injured. Now it is Yorito's task to protect the village against the majinas together with his familiar Himaru. But he is still only 18 years old and Himaru is still weak. He wants desperately to grow strong and be able to protect his older brother. But it seems his older brother is keeping something from Yorito.

4) Muchi to Obake no Shitsuke Kata
Continuation of the story about Yorito and family familiars.

5) Secret News
Two talked-about newcomers to the General Affairs section are assigned to a sour-faced boss. While working day and night to protect goodwill within the company, they get their hands on some outrageous information!

6) Mahou Tsukai no Yoru

There lives a man who has lost his memory and can’t remember where he’s from, and who he is, including his name. He just goes by the name Matsumoto and the one and only thing he remembers is how to play soccer. However, the one thing he does remember, he does exceptionally well, even better than the professionals. He sells his ridiculous soccer skills to teams and guarantees them goals and, even more important, wins. As he travels from city to city, country to country playing for money, he hopes that he regains his memory.

From Yen Press:
Sora, a young boy who lives a peaceful life on his tropical island home, is set adrift when a horrible storm wrecks the world he loves and separates him from his friends, Riku and Kairi. In another world, the Disney castle is in chaos when King Mickey goes missing, and it’s up to Donald, the court magician, and Goofy, the captain of the army, to find their king. When both Sora and the King’s allies happen upon each other and learn that the ills that have befallen their worlds are the doing of dark beings without hearts known as the Heartless, the three recent acquaintances take up arms together in an epic quest to travel to unknown worlds, set those worlds right, and find their friends!!

In the Kincaid-ka no Yuigon Game Series (The Payback Affairs series):

V.1 - Boss to Hisho no Juunikagetsu (Shattered by the CEO)
All's Fair In Love...And Business

CEO Rand Kincaid had never been coerced--until his entire future was at stake. Under the stipulations of his father's will, Rand had to rehire Tara Anthony as his assistant. It was either get along with the one woman who'd dared to leave him first, or lose his family empire.

But before Tara would accept, she gave Rand her own demands. She wanted a second chance, with Rand back in her home and bed as her lover. And nothing prepared him for where this arrangement would lead.

V.2 - Itsushika Hanayome Kouho (Bound by the Kincaid Baby)
The affluent Mitch Kincaid's livelihood hangs in the balance because of his father's peculiar will. Unless he takes in his father's illegitimate child and looks after him for one year, Mitch will lose his entire fortune. The child is now under the care of its aunt, Carly. "I'll give you a hundred grand for the child. No-five hundred." Mitch offers Carly riches, but she refuses. She claims she doesn't need any money, and that she'll only cooperate on the condition that she, too, lives at the Kincaid manor. Dammit, what is she after? Does she intend to slink into his bed - and push him into marrying her?

V.3 - Nefuda Tsuki no Ai (Wed by Deception)
Ever since her husband died eleven years ago, Nadia has been busy playing and working to take her mind off things. Now, according to her father's strange will, Nadia is to shut herself in a Dallas penthouse. Her curfew is at midnight and she is not allowed to see any of her friends or go to work. If she disobeys these conditions, she will lose all of her inheritance. What is my father trying to do by keeping me locked in? Two months after this lonely and depressing life started, her penthouse neighbor, who has been away, suddenly appears in front of her. But the minute she sees him, Nadia faints out of shock!

English version via Renta!: Vol 1, Vol 2, Vol 3

The events chronicled in this manga are also depicted in its own campaign in the Gundam: Meguriai Sora game for Playstation 2 (released in the US as Gundam: Encounters in Space), as well as a novel by Kazuki Miyamoto.

Some of the characters are seen briefly in Mobile Suit Gundam - Lost War Chronicles manga.

Note: A masterpiece collection titled Kidou Senshi Gundam Gaiden - (Uchuu) Sora, Senku no Hate ni... was release in 2015.

Altered humans, Uno and Yuuna, takes on ARCA's deal to service their debt.

a doujin telling a plausible background story for Kancolle. also telling The life of a destroyer.