A boy went to take his trash out late one night, and found a strange, creepy, gothic-lolita-dressed woman sitting amongst the garbage bags. She asked if he had a little sister, and he answered her, hurrying afterwards back to his apartment. When he looked out the window, she was gone. Who is the strange woman, and why does she give him such a bad feeling?

Kamizono Academy is a school with an elementary, middle, and high school all within the same campus, and Ayumi is a new student at this enormous school. She is shy and has difficulty making friends, but when she meets wild and outgoing Torako, school life gets interesting as Torako begins to befriend various students within their class.

It appears that the series stops at 6 volumes in 2011. Then the first 6 volumes were reprinted in 2012 with a 7th volume that came out in 2013.

The Cleopatra Corns Group, aka Cleopatra DC, is a powerful financial conglomerate controlling most of the United States economy, almost as powerful as the US government itself. At the top of the organization is the beautiful, smart and brave Ms. Cleo, the Group's young, talented Chairman, a blonde African-American who fought her way out of the slums.
Good thing she manages her company so well--it means she can handle the repair bill from that airplane crashing into her bedroom. With stolen artifacts, corporate kidnappings, and top-secret cyborg projects gone awry, her luck only gets worse from there.

Kazan is an adolecent whose family and friends were killed when he was still rather young. As the sole survivor of the Red Sands tribe, he has wandered since the fateful day the water demon stole Elsie, and destroyed his "village". He eventually meets up with a young girl named Fawna, and an old woman named Arbey, and they begin their adventure, on the road to Goldene, each seeking answers of their own in this strange city.

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Geeko's weird, creepy, friendless classmate Nero has destroyed all of their mutual classmates, perverting them into her grotesque, monstrous minions. Now she's sending them after Geeko, the only survivor. However, Geeko is setting out, dressed in her skimpy school uniform and armed with a big chainsaw, to end Nero's mad science, no matter how many undead former friends she has to saw down on the way.

From huamulan03.blogspot.com:

3 January 2011. ER doctor Matsuoka Tsuyoshi examines a patient presenting influenza symptoms. The next day, the patient dies from multiple-organ failure, followed by others who had shown the same symptoms. As the death toll rises, even the high-tech Japanese are at a loss over how to check the further spread of the deadly virus

The manga is a “somewhat realistic” office drama story depicting the behind-the-scenes life in an anime studio. The protagonist of the story aims to become a first-class animator, and the story begins just as the protagonist realizes the personal goal of entering the industry.

A former boys' school recently integrated into a co-ed high school. Shinya Sanada spent the beginning on his high school life in a hospital, so he arrives to what he thought was the boys-only dormitory a month late. What's waiting for him is his former childhood friend, although he's much more womanly than he remembers. Shinya decides to adapt to his new life at school.

Itou Takeru was highly unpopular in middle school, but one girl, Watase Nagisa, always treated him with cheerful kindness. Over time, he fell in love with Nagisa, though he never told her. He followed her to the same high school after graduation, determined that he would eventually confess his feelings for her. However, he didn't look at the chosen school too carefully, and he ended up in a special arts class with Nagisa and many other girls. He and his friend Yuto are the only boys in the class, but it isn't the paradise one might expect. Some of the girls are friendly, but some seem determined to make his life a living hell. Will Takeru be able to handle his new high school life, and will he ever tell Nagisa how he feels about her?

My wife's young naive sister. A pure innocent girl who had grown into a sexy mature lady, is slowly moving closer to me.

Spin-off of Prince of Stride told from the perspective of rival school, Saisei Gakuen.

In ancient times, at a lake somewhere in the middle of Eurasia, lived people (??????) with the ability to transform into animals. But soon internal quarrels forced the population apart into four tribes, which then scattered all over the world. Their descendants prospered, including a certain Hidaka, a high school student who would be completely unremarkable if not for his unnatural appetite. However, a British aristocrat, Earl Linford, wishes to subjugate all clans by establishing the supremacy of his own blood. For he can, after all, transform into a lion, the king of the animal reign. That is when Renée, a young woman who can turn into a beautiful wolf, enters the picture and endeavors to return Hidaka to his roots.

From: Easy Going Scans

Sul is a gardener living in the heart of a city - a veritable concrete jungle. He is an avid gardener and his yard is filled with rare plants which he tends with loving care. The townsfolk object to his practices, claiming that the plants are 'dangerous'.

One night, his garden is ravaged by a sudden, intense fire. Sul, who was blinded in the blaze, is hospitalized...and promptly lapses into a coma. While his niece anxiously awaits his revival, Sul finds himself trapped in a world full of many and varied trees; the likes of which he had never seen before. A world that, at first glance, appears to be his ideal utopia. But he soon discovers that there is unmistakeable cruelty lurking beneath the facade of beauty and tranquility...

To save his terminally ill little sister, Ling Chen enters the newly released virtual game world and joins a small gaming studio comprising entirely of women. From now on walking upon his path towards the pinnacle. An ancient, evil item almost forgotten by history, the “Wrath of the Moon” helps forge his unsurpassable legend, and causes him to unknowingly step upon a path that is destined to be punished by the heavens, the way of the shura.

In high school, Takeru confessed to and was turned down by the girl of his dreams. He then vowed to become a number one host, just to get back at her. Years later, he was the number one WORST host at his club. While out trying to bring in girls for the club, he came across a strange "goth" girl, who agreed to come so long as she could practice doing a tattoo on him. He agreed, but, not knowing what he wanted, he left the choice up to her, his only consideration that he become more popular...but was that the right choice...?

Once upon a time, there was a tribe that fought for the empire. They were feared by everyone. Their specialty was destruction and slaughter. They were called "kimera." Rin was one of them. She lived in a peaceful village until the war broke out. And at that moment, something within her began to awaken, and something beyond imagination began!

A collection of stories about relationships between men and women either of whom just happens to be a zombie.

In the panic surrounding a worldwide pandemic which kills 15 percent of the population and cripples many more, a secret organization, the Propater, topples the UN and seizes control of much of the world. A boy and a girl, raised in an abandoned virology research center, immune to the virus, are attacked by the Propater and escape.

Based strongly on Gnostic mythology, all major characters are named after gnostic deities, and have analogous roles.

"A hero" is a job that in the face of danger and adversity or from a position of weakness, display courage and the will for self sacrifice. Would you like to work as such a hero in our company? You may transform, manipulate a huge robot or fight as a squad. Shall we realize your dream in our "Hero Company"?!