From ANN:

Guts, known as the Black Swordsman, seeks sanctuary from the demonic forces attracted to him and his woman because of a demonic mark on their necks, and also vengeance against the man who branded him as an unholy sacrifice. Aided only by his titanic strength gained from a harsh childhood lived with mercenaries, a gigantic sword, and an iron prosthetic left hand, Guts must struggle against his bleak destiny, all the while fighting with a rage that might strip him of his humanity.

Warning: This manga is for mature audiences only, since it has sexual content and graphic violence (gore, blood, rape, etc). Definitely not for the weak hearted.

The 1988 Prototype chapter won a prize at the Comi Manga School Miura attended and the main series won the Tezuka Osamu Award for Excellence in 2002.

From MangaHelpers: In a hidden school surrounded by mountains, young ladies of good families are taught everything a high class lady needs to know. They are also completely cut off from the outside world, keeping them sheltered and innocent. However, a problem has come up recently-- more and more graduates are failing to cope with the modern world after graduation. To deal with this problem, they've decided to kidnap a male commoner student, and enroll him as a student. They hope that this will be a gentle way to introduce the girls to the outside world. Kagurazaka Kimito is chosen for this dubious honor, mostly because he seems utterly average. However, the school leaders also seem to have concluded he's a homosexual with a muscle fetish. When Kimito hears that the alternative may be castration (to protect the girls' purity), he eagerly plays along with this misconception. Now he'll just have to survive the attention of many high class young ladies that are completely out of touch with the world! [tethysdust]

The series follows Kyouko Okita, a buxom housewife who's just recently moved into a new neighborhood with her husband. There she tries to adjust to her new neighborhood, make new friends, and deal with the quirkiness of her everyday life.

From Seraphic Deviltry:

An expressionless club doorman meets a flashy boy at one of the many parties the place gathers. As someone who’s always been considered quite boring or an emotionless person, Saya-chan with his clumsy personality will make this man a more vivid one.

From Storm in Heaven:

Natsume's just an ordinary kid, except he can see spirits, just like his grandma Reiko could. Reiko, though, used to bully the spirits, and bound them to her will in the "Book of Friends". Now that Natsume has inherited this book, a never-ending stream of spirits is coming after him. With the help of a spirit "cat" (who really just wants Natsume to die so he can have the book), Natsume spends his days dissolving the contracts that bind the spirits and trying not to get killed.

Extras:
? Manabiya no Sumi (The Corner of the Schoolhouse) in v.6.
? Natsu ni wa Tameiki (w)o Tsuku (A Midsummer Sigh) in v.7.

Nominated for the 1st Manga Taisho in 2008.

Kanaruzawa Sekai, "The God Who Lived A Thousand Years", is a beautiful girl with silver hair and red eyes. She's pompous and does not know much about her surroundings, and despite her childish appearance, she can tolerate alcohol and tobacco, and spends her day in her mansion reading books.
Offered to her as a "living sacrifice" is high school student Kirishima Yuuki. As he was told she'd grant him one thing in exchange of being the sacrifice, Kirishima said: "Kanaruzawa Sekai-san, marry me."
And so, they start to live their life together---but their days without peace nor love became disrupted, as the world began to be disordered due to a terrifying secret concerning the whole world.
A comedically pure love, and a never-ending story begins here!

In the Mizu Wakusei Nendaiki (Aqua Planet Chronicle) series:
1. Mizu Wakusei Nendaiki (Aqua Planet Chronicle)
2. Zoku Mizu Wakusei Nendaiki (Aqua Planet Chronicle After)
3. Kan Mizu Wakusei Nendaiki (Aqua Planet Chronicle Around)
4. Midori Mizu Wakusei Nendaiki (Aqua Planet Chronicle Jade)
5. Ao Mizu Wakusei Nendaiki (Aqua Planet Chronicle Blue)
6. Mizu Wakusei Nendaiki Getsujou (Runyan) (Aqua Planet Chronicle Final)
7. Mizu Wakusei Nendaiki Gekkan Sachisachi (Aqua Planet Chronicle Monthly Sachisachi)

White swindlers (shirosagi) are those that cheat people to take their money, red swindlers (akasagi) are those that swindle the opposite sex, and black swindlers (kurosagi) are those that cheat the white and red swindlers. After his family is swindled by white swindlers, Kurosaki sets out to avenge them by becoming a black swindler.

Note: Won the 2008 Shogakukan Manga Award for seinen/general manga along with Bambino!.

Shinta likes to play with cats even though he cannot have one for a pet because of his father's allergies. Cats also like to play with Shinta... in more ways than one... including becoming Shinta's girlfriend and generally trying to get him to reciprocate their catcalls, literally.

In war, men become beasts. War makes gods out of beasts. When war ends... where do the gods go? Where can they rest their weary heads?

Wolves walk the forest of despair, the wasteland of lamentation, the sea of bitterness, in the time of dark and light. To kill those that were once their friends.

Other contributer: C2 Agency

Enjoy the heartwarming antics of the World War II-Era Japanese Imperial Navy in the form of cute girls training at the ship girl school.

The manga is based on the Kantai Collection browser game.

Development Management: Kadokawa Games

After being hospitalized, Sana, meets a mysterious girl at the vending machine named Kousaka Ayane. They are both interested in each other and start spending time in their rooms. With every meeting Sana experiences new emotions which she hasn't felt before. After Ayane's doctor tells her that she is going to leave hospital she meets Sana one more time...

Sagara becomes a girl in his third year of middle school, and has to deal with his crush on Kurosawa, a female classmate.

Includes an extra story featuring Mamiya and Miyoshi from Kanojo ni Naru Hi five years later in volume 1.
S no Kaikoroku is the extra chapter in volume 2.

As an anonymous erotic author, high-school student Mitsumaru Yahiro needs to keep his occupation a secret. If anyone were to find out, everyone would look at him as a pervert and his life would be over. Yahiro’s wish for his secret to remain unknown is reinforced when Kisaki Madoka, his crush, becomes disgusted when she saw his erotic series. Soon after, his work load increases and the publisher sends an assistant to help in the process. But the assistant turns out to be Madoka and, in fact, she is a giant fan of Yahiro’s work. She seems to be willing to do anything to keep working for him and it looks like the tables have turned for Yahiro.

Divine Bells - they choose their own masters and they determine the status, prestige, and influence of the countries their masters rule. The presence or lack of these Bells also has great consequence in the lives of each country's royalty. In particular, the personal and political futures of King Hong-Ryeong seem doomed without a Bell, but at equally great peril if he obtains one.

But are the Divine Bells simple magical charms, deities of great powers, or something else altogether? And when the owner of three of the eight existing Divine Bells dies, leaving them to choose new owners, where will the resulting turmoil lead?

Genshiken follows the lives of a group of college students drawn together by their shared hobbies, and the trials and adventures associated with being otaku.

Genshiken Nidaime ("Second Generation") is a continuation of the previous series, with chapter numbering starting at 56. In the Japanese edition, the first volume of Nidaime is numbered Volume 10, to continue from the end of the 9-volume Genshiken series. The US edition renumbers the volumes so that the "Second Season" starts with Volume 1.

Sakaguchi Ryou has a dark secret: he's a "fudanshi" -- a straight guy obsessed with BL. While he has trouble understanding why other guys don't find the same bliss he does from this unusual hobby, he'll be the first to admit how awkward and embarrassing it is to buy manga from the girls' section of the bookshop, or explain the world of boys' love, shipping wars and doujinshi circles to his "normal" best friend Nakamura.

Will Ryou find other fans to share his hobby with, or is he forever doomed to sit alone on his throne of BL romance?

From Tapastic

Vance just wanted to make the most out of his college experience under an authoritarian regime, and if that meant hacking into the university to assign himself a hot female roommate, then so be it. The last thing he expected was to be dragged into a crazy conspiracy to overthrow the government by his most-definitely-not-female roommate. College was meant to be exciting, but not this exciting. Between failed dates, failed grades, and successful hacks, Vance will slowly begin to question the morality of his actions and the true price of freedom.

From Hoshikuzuu Scans:

Maki, a popular and good-looking dude, but a virgin. Despite his playboy looks, he believes that sex should be done with someone you like. A pure-hearted teenage boy that you rarely see nowadays. And by some accident, his classmate Miyashita found out about him being a virgin. In exchange for his silence, Maki is threatened into going out with him. He reluctantly accepts, but later discovers that Miyashita is a huge sadist.