From Operation Boredom:

Ichiko Usami is a fifteen-year-old runaway girl. One day, while she’s loitering around the riverbed with nowhere to go, a masked boy named Kohaku suddenly appears in front of her! Ichiko faints and Kohaku takes her to the mansion he shares with several others. Even while lost in wonderment at the individualistic residents, Ichiko gradually opens up to them. But why is she somehow frightened by the fallen children shoes?

Arimasa was a half-demon priest who cared nothing of what others thought of him. That was, until one fateful night, while on a mission to exorcise a gang of demons, he encounters Kagetsu, a clumsy cat demon who will eventually change his world, and more importantly, his views of it.

From Midnight Scans:

“My cute Kuro, I’m sorry, but I have to go somewhere far away, however, if you are obedient, I will come back soon. So, please, look after this house. I love you, Kuro!”

Hitomi gave this promise to her beloved dog, Kuro; however, this story continues a hundred years after this. Mitsuko’s parents are divorced, and her mother did not come to pick her up, therefore, her charming teacher becomes her guardian. Then, one day, Mitsuko and her friends decide to go for an excursion to a rumored haunted old mansion, and then, a black dog suddenly attacks them ferociously.

Just when she thought the dog was going to bite her, the dog cuddles around her and brings her to a portrait of a lady, who resembles her! Then, the dog transforms into a naked, hot dude and embraces her…! What will happen to Mitsuko?

Will her heart be melted by the loyal and handsome, Kuro? Or, will she be saved by her reliable teacher?

Contains Side Stories:

Shiibate Agemasu (縛ってあげます)
An extra sidestory in relation to Mamotte Agemasu

Dokonjou Girl
Sakurai had worked hard to be beautiful and popular, but currently she has a problem. Her crush keeps hanging out with his ex, so she consults a handsome player senpai to have that girl date him. Of course, he would do it if Sakurai pays, but he also happened to know her secret...

Skyhigh Shinshou presents the stories of those souls who get to the Gate of Grudges. Izuko, keeper of the Gate of Grudges presents each soul with three choices: pass through the Gate of Grudges to heaven and be reborn, refuse to admit death and remain as a ghost on earth, or haunt and kill one person and then proceed to hell and eternal suffering. What does each soul choose and why?

N/A

"Justice is within your heart!"
Welcome to the Misaki Academy, a futuristic island-sized school where students' freedom is valued above all else. This lack of restrictions has lead to the founding of some very unusual extracurricular activities and groups, like the World Domination Club. When the World Domination Club attempt to control the school lunch program, cute high school girl Hayana Suzunari decides to take a stand, becoming Twinkle Saber, defender of justice!
The series that took the amateur press manga industry by storm is now widely available as "Twinkle Saber NOVA"!

Alternative Summary:
Hayana and Aoi go to Misaki Academy, where their favorite pastime is to eat at all the local restaurants. Misaki is known for it's lax importance on rules, and while that means freedom, it can mean trouble. Hayana's lunch gets interrupted one day by a new club... the World Domination Club! (They're starting with the school lunch program and working outwards.) Luckily, Hayana gets some help from one of her teachers and joins the Ally of Justice Club as Twinkle Saber, sworn to defend the lunchtime (and truth and justice along the way) of Misaki Academy against the World Domination Club!

Mister Mermaid: On a full moon night, Subaru - a merman - coincidentally saved a man who sank into the ocean. After that, in order to see that man again, Subaru traded off his tail for a pair of legs and came to the surface to find Tatsuki - the man's name. Despite of his throbbing feet and his lost voice, Subaru was happy to be able to stay by Tatsuki's side. However, his happiness soon faded away when he found out the reason why Tatsuki was at the bottom of the ocean that day.

Fuji no Yamai (Undying Illness): Byakuya had an incurable undying illness, which means he couldn't die. Gin, his best friend, made a promise that he would take care of Byakuya until death and the promise had been kept for 16 generations. However, Gin the Sixteenth had no intention of making babies for the next generation; instead, he kept his promise with Byakuya in a way that none of the previous Gins had done.

NOTE: A sequel to Mister Mermaid, "Mister Mermaid After That," was published in doujinshi.

From September Scanlations:

Yatogami Kuroh has lost the only thing remotely close to family he had left—and to make matters worse, he’s been charged with a final task by his master that he isn’t entirely sure he’ll be able to fulfill. Follow this young modern-era samurai as he sets off on a quest to track down the next Colorless King and determine if he’s evil or not…and to strike him down where he stands if he is. (Off-shoot manga of the anime ‘K Project’)

From ADV:

Vampire vs. vampire, with humanity in the balance! The destinies of two people, along with the fate of the world and its inhabitants, are about to become intertwined.

On a rainy night in California, Osamu encounters a capsule that holds a mysterious green-haired being. He soon finds himself in the middle of a power struggle, as warring factions of vampire aliens descend to Earth. On one side are those who seek to use the recovered alien--Kimera--to repopulate their dying race. On the other side is Kimera's former mate, who wishes to kill him. Will humanity face total destruction, or will Kimera be killed, ultimately saving the world?

Touu, a half-human youkai with a fondness for sweets, manages a pawnshop in a secluded part of town.
Wan Lon, the bad-tempered young man who has become Touu's manservant in return for his help preserving his beloved sister's 'memories', gets all the troublesome jobs pushed on to him.

The shop deals in human emotions. Any forbidden or irrepressible emotion that is tormenting the customers will, with their permission, be turned into crystal and pawned. Of course, it doesn't hurt that these beautiful crystals happen to be the sweet-toothed youkai's favourite food...

From Go! Comi:

High school tough girl Aria is notorious for taking on her school’s worst bullies. But punching out jerks is nothing compared to what happens when she finds herself inexplicably drawn to the demonically possessed Sakura, a guy who would as readily rip apart his own parents as seek her healing embrace. Sakura says Aria has the power to save him, but will she be able – or even willing to?

--

Includes two stories (not related to the main story):

• Road Song (Vol. 5)
A young girl moves into another city to fulfill her grandparent`s dying wish. As soon as she gets there she ends up being robbed. This is how all her troubles begin.
- N @ K

• Tricky Area (Vol. 6)
A family moves into a new house where they get an unpleasant surprise: the house is cursed. Read and see what happens next.
- N @ K

From Tokyopop: In these haunting tales, a girl creates a cell phone in her imagination, from which she can communicate with others... A young boy discovers his new friend has the power to heal others--and learns about true friendship and sacrifice... And the healing power of love confronts the tragedy and horror of a deadly train accident.

Wonderful stories revolving around a pair of lovers and their friends.

1) Kimi ni Sasayaku Mirai (The Future I Whisper to You)
Kazuki-senpai has been reported to have been involved in a fatal airplane crash. But miraculously, he shows up on Renji's doorstep...

2) Kimi ni Sasayaku Rakuen (The Paradise I Whisper to You)
Continuing the story of Kazuki and Renji - 16 years later.

3) The Loneliness I Whisper to You
More of Kazuki and Renji - 18 years later.

4) The Moment That You Whisper
This story centers around Kazuki's 'friend,' Kyou Sakurai, who is unceremoniously pushed by Kazuki into a portal to hell. There, Kyou meets a man who is the vessel to the Death Tunnel - responsible for sending people to hell. The man offers Kyou power to get revenge against Kazuki, but there is only one way to accomplish that...

5) Pretentious You (oneshot)
A man who changes partners constantly is scolded for it by his boss. So his boss offers to be his regular lover until he finds someone to love.

First year university student, ZiMo, suddenly receives news of his brother-in-law's death. On top of that, at the funeral, he learns that his brother-in-law is a master of the name spell technique and that he chose ZiMo as his successor! This is the way the spirit domain's gates opened before ZiMo...

Toriko Tsukigata is a beautiful girl who judges guys solely upon their appearance. One day her life changes: Someone tells her that she's the eighth reincarnation of Princess Kaguya, who is a playgirl. To pay for the sins Princess Kaguya commited in her past life, she has to find a guy whom she really loves. If she fails, Toriko will become a hundred-year-old grandma.

From Delish Scans:

Yoshino’s family moves frequently due to his parent's job transfers. He’s finally made his first true friend, but has to move again. Before he leaves, he makes a promise to come back and visit her—before she gets married.

What will happen when a human has extra power? What will happen when that power is used to fulfill all of his will?
Masami, who often looks like an innocent little boy, apparently has the power that he uses as a killer weapon. He even dares to hurt his own mother in order to reach his goal. What will Shogo do as his best friend?

Shinohara Sumi is stuck taking supplementary lessons in the heat of summer. Her situation immediately changes when a mysterious boy named Yoshino Mitsuru jumps into the classroom through the second story window. He spends each day helping her with her lessons, and her feelings for him begin to grow. But things may not be all that they seem as she begins seeking the reasons for the loneliness in his eyes…

Minamino Sango, a 16 year-old cute, hyper, and somewhat reckless girl, gets rescued one day by a green-eyed boy with black wings who calls himself Kai and claims to be Sango's guardian angel... or is he a devil?

About a middle-school girl and her super aging pills.