From Storm in Heaven:

Ten years ago, there was an explosion at Hisano's apartment building. She would have been there, but she'd been hit by a bike ridden by a boy in blood-stained clothes. He dropped a fake gem when it happened, and she's been hanging on to it as a good-luck charm ever since. Now Hisano's in high school. One of her teachers was murdered, and the police are investigating. A young man suddenly appears carrying the toy the gem belonged to. And perhaps... can he also see the hallucinations Hisano has always been plagued with? Everything is connected as the pattern slowly rises to the surface.

The Empire of Brittania has invaded Japan using giant robot weapons called Knightmare Frames. Japan is now referred to as Area 11, and its people the 11s. A Brittanian who was living in Japan at the time, Lelouch, vowed to his Japanese friend Suzaku that he'd destroy Brittania. Years later, Lelouch is in high school, but regularly skips out of school to go play chess and gamble on himself. One day, he stumbles on terrorists 11s who've stolen a military secret and is caught by a member of the Brittanian task force sent after them, who is Suzaku. As the rest of the squad arrives, Suzaku is shot for disobeying orders, while the military secret, a young girl, gives Lelouch the power to make anyone obey any order. He takes command of the terrorists and leads them to crush the approaching Brittanian force. However, Suzaku is secretly made the pilot of Brittania's brand new test model Knightmare, Lancelot. Lelouch becomes the masked king Zero to lead the rebellion to defeat Brittania. This series follows Suzaku's side of the story, while Lelouch of the Rebellion follow's Lelouch's.

The story takes place in the same official Code Geass history as the anime, but in a different era. The title character, Renya, is a 17-year-old boy with a mechanical left arm and shuriken throwing stars as his weapons of choice. The story begins when Renya encounters a mysterious, perpetually young witch named "Reifuu C.C." C.C. has appeared in Japan's historical Edo era to seek a new partner for a covenant. Meanwhile, a mysterious man, with a striking resemblance to the character Lelouch of the original anime, also appears with unknown intentions.

One day, when Hidaka Kishi is going to school with his close friend Kimiko, he notices a strange new song on his music player: "Who Killed Cock Robin?" Little does he know, a murderous game is beginning, with him as the target--the Cock Robin. Fourteen other players (called 'birds') are all competing to kill him, in exchange for making their wishes come true. However, one of the birds, Saedano Minami, seems to have other plans. To Hidaka's confusion, she decides to protect him, but what is her ultimate goal? How will Hidaka survive this deadly game?

From Viz: Delve into the tortured past of Earl Cain C. Hargreaves, charismatic heir to a wealthy family full of secrets, lies and unthinkable crimes. The prequel to the Godchild series, The Cain Saga follows the young Cain as he attempts to unravel the secrets of his birth, all the while solving each new mystery that comes his way.

From Entropy:

In the languid hours of yesterday, I went to the tangled grasses near the river, so tangled that humans don’t often venture there, and had heaps of fun playing alone. As per usual, I had had a glass of sue-ju with grandmother in the morning, and drunk, I grabbed a towel and stumbled my way up. There won’t be any watchers, my body thought, and it slipped so easily into the water. Floating in the clear and pretty water I looked at the sky, saw the floating clouds. Hee hee… in that small space I even had a go at swimming like the pros. If you sit on the rock and rest for a bit you can see the small sand-colored fishes swimming around. Even such small creatures made shadows on the river bed and moved around. Yeah, every day I play at being a mountain wizard. Whether the axe handles decay or not… violets.

From Bliss:

Yani, the young prime minister of the empire of Pisare, wanted to see his dear childhood friend, the beautiful attorney general, Sesaam purely as a friend. But it seems his heart isn't following his mind. On one hand he's facing the facts that he wants Sesaam as his lover but on another hand he didn't want to destroy the trust he had build for years with Sesaam due to his selfish feelings. Then, all of a sudden, Sesaam told him he could have sex with him...!?

From Bliss:

The powerful pirate clan Preveza holds control over the Morea Sea. Amongst the pirates is the clan's strategist, the blind but beautiful Canale, and the fleet commander, Ayace. However, the secret that Canale holds is about to change the relationship between the two of them...

With their school shutting down for good, the students of a small town were heading for different directions in life. For Minase Tamaki, who was staying in town to find a job, it might be the last time she sees her crush Shindo Yuuma, who is moving to the city to attend a new school. She asks him to do a little prayer that is supposed to help people cross paths again even if they become separated. But her classmate, Yuzuki Erina, overhears their conversation and, out of jealousy, decides to ruin her plans by inviting their entire class on what was supposed to be an intimate spell. As soon as the charm goes off, the ground splits in half, swallowing the entire class and, when they wake up, they find themselves in an old school campus. Unable to find a way out, they wander the corridors, trying to figure out where they are. But it seems that the building isn’t as abandoned as they thought it was and, in fact, something evil is lurking in the shadows.

From Kotonoha:

Seventh grader Hayashi Renei is troubled by a strange dream: Her dead brother, who was killed in an automobile accident, comes back to life as Coo. The dream comes again the following night and then every night thereafter.

Coo's world is a cruel one--crueler than the real world, even--with its own share of pain, suffering, and sadness. Renei is searching for her house with her brother and others whom she meets in Coo's world so that she can return to reality and the land of the living...

From Hyper Parfait:

Kuchiki, a flutist, was plagued by nightmares every night that forced her to seek the help of counselor Matsuzaki. Ishikura, a police inspector, unexpectedly discovered a headless mummified body in an empty apartment and is now on the case. When Kuchiki regains her lost memories, the curtains also opens to a tragedy!

1st story - Concrete Garden
Angels exist and Kashii Kiyoharu, grandson of the man who "created" the angel, has been hired to befriend him. His name is Toki. Kashii soon finds out why the scientists need him around. Toki is lonely, but no one wants to get near him unless it's necessary since he eats human flesh. What has Kashii gotten himself into?

2nd story - Clock Down
Everyone expects Tokiwo to go to a good university. However Tokiwo doesn't want to in order to "play it safe". One night there was suddenly an earthquake. The stone he was looking at started to glow and out of his floor comes someone who looks exactly like his childhood friend Jiu. Well there is a difference. This "Jiu" is dressed for combat and has a very large weapon. Just what does the stone have to do with "Jiu" and who gave Tokiwo the stone?

From YumeDream:
Shinobu is a figure skater who loves ice-skating. First of the 2 stories of the volume is about the growing feelings Shinobu has for her new, young, and total bishie of a trainer. The last story of the volume is about a love triangle among childhood friends.

In the Crystal Harem series:

Vol. 1 - Crystal Harem
Yajima met a gorgeous young man, Ryo, when he was investigating a case. He was mesmerized by Ryo's eyes and got his badge stolen instead. Who is Ryo? What does he want? And who was the man living in Yajima's heart? The tormenting memories are coming back again…

Vol. 2 - Guren no Kusari
More of Ryou and Yajima! 3 young boys with restraining marks were found murdered and disposed off like trash. While Yajima was doing investigation, Ryou was kidnapped! Would Yajima be able to find the murderer in time and save Ryou?

Vol. 2 Chapter 4 - The Feelings of the Dog
The dog trainer Tomo is going to have to teach the new dog owner what to do from beginng to end.

- Attractive Fascinante

The series consists primarily of short vignettes detailing the adventures of the Crossbone Vanguard space pirates three years after the original manga.
The first story is set during the One Year War and deals with a young Umon Samon. The series also features the "return" of Grey Stoke, an aged Judau Ashta under an alias, who first appeared in Hasegawa's Mobile Suit Victory Gundam Side Story manga.

From Snow Kiss Scanlations:

Towa became a sweeper admiring the legendary sweeper called, “Orange-Eyed Messiah”. The task of sweeper, which requires to “sweep” the monsters Adys is quite hazardous. On his first real attempt at fighting Adys, Towa encountered Kei, a former sweeper who saved him from being killed.
Towa asked Kei to take him as a student. However, not only Kei plainly rejects Towa’s request, he tells Towa that he saw the “Orange-eyed Messiah” die!? An appearance by a mysterious man who seems to be connected to Kei showed up with a grudge from the past. Who is he and what is his relationship with the “Orange-Eyed Messiah”? Will Towa finds out about Kei’s past too?

From Yen Press:

Rescued from the darkness by Xeno, a mysterious swordsman, Claudia the Rose Witch is the foundation of the Crimson-Shell, a special division of the Red Rose—an organization aiming to capture the results of one mad scientist’s experiments, the deadly Black Roses. But when Xeno’s loyalties are called into question, will Claudia be strong enough to believe in her dearest friend? And what is the color of the rose blooming in Xeno’s heart—a deep, passionate crimson…or a traitorous jet-black?

From Seven Seas:

From the time she was sold into servitude as a young girl and told by a handsome demonic figure that she had a destiny to fulfill, Sheila’s childhood was anything but easy. After joining an assassin’s guild to undergo rigorous training, Sheila is later taken in by the dashing Prince Edvard to serve as both his housemaid and bodyguard. As skillful as she is with a blade, Sheila hasn’t a clue when it comes to courtly romance. While she uses her talents to help Edvard win the throne, can she stave off the many admirers who vie for her heart?

From Bliss:
In this universe, there are four worlds: Meikai, the center of the universe, Ninkai, the human world, Youkai, where monsters with shape-shifting forms live, and Shintenkai, the world of the Celestials. Shiba Yukinari is one of the few who are born of both Youkai and Celestial blood - during the day, he works as a detective, but also has the job of exterminating youkai. As he works collecting 'cores', or a youkai's source of power, he meets Riifei who that demands that Yukinari hand over his own 'core'...

Vol.1 Crimson
Vol.2 Crimson Crown
Vol.3 Crimson Chaos

From Sensation Scans:

Seo Kyoung is pitiful. Everyone thinks she is, especially after making the wrong "friends," she now has to prove that she does have a boyfriend. She accidentally chooses the most popular guy in school... And... he starts to like her. But his best friend likes her too. What will happen?