From asdf scans:
In near future, mankind has been defeated by the viral parasites named "Gastrea." They have been exiled into a small territory and live in despair, side by side with terror. In this world trapped in darkness Rentaro, a boy living near Tokyo and a member of the "Civil Security"—an organization specializing in fighting against the Gastrea—is used to accomplishing dangerous tasks. His partner is Enju, a precocious young girl. They fight using their peculiar powers until one day, they receive a special assignment from the government. This top secret mission is to prevent the destruction of Tokyo. Set in a near future, this thrilling heroic-action story starts now.

A Genius who Fell into darkness. The God of the Underworld.
Akagi runs from a game of chicken where he almost died, to a Mahjong parlour where a man loses all his money to the yakuza. Akagi, who is only thirteen, tells the loser that his game needs improvement (although Akagi himself has never played before). Akagi replaces him in the game, and so a legend is born.
When the police come to check on the place to see if the kid that ran from the game of chicken is there the yakuza deny that Akagi was involved. In the end the policeman invites Akagi to a much more organized Mahjong game and from there, the legend of the Genius who Fell into Darkness continues to grow.

Inugami Tsubaki is the perfect girl and has her future perfectly planned: she's beautiful, smart, skilled in sports and loved by everyone. As the future head of the most powerful financial clan of Japan, it seems nothing can stop her. However, in her first day of high school, she meets Sarutobi Sanosuke, a wicked guy who outsmarts her and quickly becomes her enemy - what's going to happen between them?

This manga is about the black cat "Kuro" and the lone girl "Coco" living together in a large mansion. Cute, fun and somehow eerie... Check out this full-color manga full of mysteries!

The resonating Echo of the sword changes the boy's fear into rage.

From MangaHelpers:
This is a story of a group of college-age people who struggle with gender and sexual identity.
Yuki (nicknamed Yoshiki) is a girl, but she is terrible at 'being feminine.' She mostly dresses like a boy and is often mistaken as one. However, she has to wear a skirt and imagine being dominated by a guy in order to masturbate. Nagao Mikako seems young and innocent, and she uses that apparent innocence to sell her body as a fake 15-year-old. She knows her youthfulness can't last forever, but she enjoys tricking the men. Her friends have no idea of her sexual habits and believe her to be sweet and sheltered. Aiba Kaito is a pretty good-looking guy, but he wants to be Nagao Mikako. He often dresses as a girl, picking out clothes that mimic Mikako's style. Though he's into cross-dressing, he is still attracted to women. Will these young adults and their friends be able to handle their 'guilty secrets' and muddle their way through this confusing period of their lives?

A reclusive, disfigured man stalks a pretty, good-natured housewife. One day, he witnesses this woman's daughter being kidnapped.

This is a 5-volume manga series comprised of individual short stories that all have to do with coffee one way or other. Each of them is bittersweet with a philosophical bent.

Yuu Tomonoga is a genius who was accepted to an American university at the young age of 13 and later accepted into the university's graduate program. Unfortunately, he loses funding for his research, but decides to drop out and continue the research on his own. He travels back to Japan in hopes of getting funding, but he quickly runs out of money for daily living. Luckily, he gets a call from an old friend and accepts his offer to teach at an all-girls school.

The story is set in a dystopian near future where the Japan society is experiencing a crime rampage and in which a powerful and secret religious organization, with mysterious goals, is acting as an invisible hand behind the scenes.

The main character is their strongest assassin, lent to them by his fanatic mother when he was a child, and now a ruthless killing machine whose fists and feet cause serious damage to his adversaries, and whose weapon of choice is a special cutting wire with which he grabs and scorches his opponents.

He's a man hunter, whose childhood has been stolen and molded after his tormentors, but when the road of forgiveness is precluded to him what can be left to a man to obtain the redemption?

Takeo finds the answer in the vengeance, and in eradicating that same evil from which he has born.

So this dark and impressive badass guy, after betraying the sect, gets down to business kicking their ass and unleashing his fury against the deadly opponents sent to stop his unparalleled revenge.

"The youth ensemble of love, food and war..."

A look into an usual Japanese suburb through an old man's eyes.

Passionate music lover, 21-year-old Naruse Gaku yearns to be a part of the legendary "Woodstock" Rock Music Festival. However, due to his shy nature, he lacks the courage to form a band. Instead, he resorts to creating a virtual band called "The Charlies", to fulfill his dreams. Thanks to word of mouth from netizens, The Charlies gain popularity, and Naruse's life changes rapidly.

Makoto meets a sweet, shy girl named Haruna helping out at the school's athletics festival. He confesses his feelings for her the next time he sees her, and she bluntly rejects him, only to call him later and ask him out herself! The source of all these mixed signals is Haruna's "evil" twin sister, Natsumi. Natsumi is the opposite of Haruna, she's a forward, crude girl bent on taking whatever she can from her twin sister. Makoto is stuck in between Haruna and Natsumi, as they viciously fight over who will win him in the end.

Included one-shots:
Volume 1: Hikaru challenge!, Detarame Machi no Kaigenshou.

A chance for an interview for a large company is given to a man who has nothing to show for himself. An authentic fiery interview will now begin! Are you paying attention? Get ready!’ Lee Hyunmin’s <Hear My Voice> begins!

The world is in a state of isolation. The cause is due to mysterious deep sea entities the navy has dubbed the "Deep Sea Fleet" and they're taking over the seas, isolating all the countries of the world from one another. Refusing to just sit idly by and let the Deep Sea Fleet have its way, all the countries of the world pool their resources to make a new weapon to combat them... a weapon that is comparable in power to that of a battleship... and its name is: The Fleet Girls. Will this new weapon be enough to combat the Deep Sea Fleet? Will the ensign that was just sent to the naval base where the "Fleet Girls" are kept be able to aid in their struggle... Only time will tell as this war against the Deep Sea Fleet begins to unfold.

Three boys in junior-high who cross-dress because of differing reasons meet each other through a cross-dressing community website, and decide to meet up in real life. "Parou" started cross-dressing because he wanted to attract a heterosexual boy he liked. "Marika" is transgender and identifies as female. Lastly, "Yui" is an antagonistic boy who adopted the persona of his older sister after her death. In contrast to Parou and Marika, Yui is sorely disappointed at the meeting.

This is a mixed martial arts fighting manga about the Miyazawa school of martial arts. Initially, it is about Kiichi trying to heal his father after he was nearly killed by his brother Kiryu. But then it goes on to be less about that as his father recovers and some tournament style fighting begins. At that point various apparently overwhelming opponents will encounter Kiichi on his way to the top. The objectives of the various characters start to play a more and more important role, as well as the different philosophical projections of several martial arts and disciplines. (Somewhat maybe like a modern day Samurai story.)

This is also a continuation of Koukou Tekkenden Tough which followed the main character, Kiichi, when he was younger and was training under his father Seiko Miyazawa. (Knowing the prequel isn't necessary at all.)

A new transfer student has come into town, a girl with a mysterious air and black clothing who is called Inugami Sakuya. What few know is that by moonlight, she hunts and kills those possessed by "Inugami." A man can become possessed by being bitten, leading to a nighttime transformation into a beast driven to eat women. Sakuya gets no thanks for brutally ending the lives of these unfortunate men with her sword, and she is often too late to save the women they threaten. Sakuya also must deal with her own inner demons, which are all too real.

Yuuka Yoshimi is a young woman working in a Eroge studio who is learning how to make good ecchi CG.