From DokiDoki:

When a Tokyo teenager botches a suicide attempt, he finds himself recovering in a hospital where most of the patients are more than twice his age. Rejecting his mother's visits, he spends his time counting the hours between meals and blood-tests until a run-in with another teenage patient leaves him with an unlikely new friend.

When high school student Tsuruta goes in search of a missing cat, he could never have guessed what lies in store for him on the other side of the tunnel...

Popular actors, models, charismatic businessmen…. Falling in love with handsome icons is super exciting and sweet! A day when you will fall in love will soon arrive….

Kisaragi Akira is a police officer investigating a murder case that reminds him of his past.
The memory that he forced himself to forget.
And the past that he buried in the deepest part of his heart.
The clock that was once stopped has started ticking again.

From Titania:

A manga about people trying to kill themselves, but weird stuff happens instead.

01 - Group Suicide
02 - Strange Tale of the Pylorus
03 - Paradoxical Night
04 - Dr. Suka's Villa
05 - The Spirit World Project
06 - To The Dazzling Future
07 - The Licking Woman + Mystery Pavillion (Ones-shots)

The protagonist is a descendant of Pcell. This story happens a long time after the events of Blame!. This young silicon creature knows well the havoc that Killy brought and decides to move towards the end of the megastructure, to look for him. NOTE: This oneshot is actually chapter 8 of Blame Gakuen! and So On

Set in 2194 AD, China, which is now a prosperous, super-modern country. The characters are mostly reincarnations of warriors from the 3 Kingdoms period. The story begins in Shin Yokohama with main chara Todoroki Ranshirou driving around & causing a ruckus with his bousouzoku called Yokohama Road Stars, when he gets a mysterious package from his father. Soon after he's attacked by Blades and makes an astonishing self-discovery... that he's the reincarnation of Sun Ce!

The much-awaited sequel to BLAME! follows a man, called a Dismantler, who is in charge of sub-dividing the nexus towers that incurr Safeguard interference upon its detection of humans without the net terminal genes. Although humans are once again able to reside in the Net sphere, the Safeguard are still a threat. The Dismantler or NSE, or Net sphere engineer, goes on a journey to aid mankind in their survival. NOTE: This oneshot is actually chapter 6 of Blame Gakuen! and So On

From: Easy Going Scans

The Van Helsing Church Order is bent on destroying all supernatural creatures, as well as anyone else who gets in their way. However, a certain silver-haired man and red-haired vampire are not waiting for the Church to come to them! During their latest attack on a Van Helsing "cleansing" squad, they inadvertently save the life of a human being..

From MangaHelpers:
When an enemy explosion leaves private military soldier Terawaki Ryo nearly dead, a secret organization rebuilds his body using the research they have done in human revivals. Unfortunately for him, the technology only allows him to come back in the form of a teenage girl. His new identity, Shibahara Kyoko, leaves him distraught as his frail body doesn’t allow for the combat skills he used to have or even pick up heavy artillery he used in the combat field. Kyoko is assigned to protect a prestigious academy where daughters of powerful leaders attend since the girls’ presence makes it a hotspot for terrorists to attack and blackmail the people in power. Led by his former commander and mentor, Major Honjo who has also been reborn as Ryo, was a beautiful teenage girl named Chujo Shizuko, and the pair work together as anti-terrorist teenage school girls.

From Chibi Manga:

Wakaba has no memories about her first love… The only thing she keeps from her first love is a matching pendant. One day, the vampire of rumors, Yukito, comes to her school. And he has the same pendant as her?!
Wakaba is sure that Yukito is her first love just after telling him, he kissed her.
But why is he so cold with her after that?!

Besides there are two other side stories:
Un Chocoholic
Bloody Honey

Oneshot from Yuri Hime Wildrose

This is about two girls who like blue ribbons.

Sachi lost her parents due to the sudden attack of an alien race called the Gosta. While living in an orphanage of children who suffered the same fate, a girl with no memory, Ai, suddenly appeared. Who is this girl and what is she so afraid of?

A lifelong dream of fame and fortune has been the driving force of Wataru Jouchi's entire life. Now, after much self-doubt, he's decided to fulfill his destiny and become a voice actor for anime videos. At first, he is thrilled to discover that his long-lost friend, Renji Kazama, is considered a top star in the industry. But Kazama does not seem at all pleased about their unexpected reunion.

-----------

From Youka Nitta, author of Embracing Love. Boku No Koe follows a young voice actor who dreams of making it big in the industry, but when he finally gets his chance he gets cold feet. Surrounded by voice acting legends, he can't help but feel insignificant. Will his seniors take him in and show him everything they know about voice acting -- and love?

Yui is simply a ghost wandering around the beach. She does not know who she is or what happened on "that day." That is, until she meets up with her big sister Yuria who helps fill in the missing pieces...

This isn't an ordinary high school—these kids have magical powers! Having the ability to cast a four-dimensional image can bring you fame and fortune, but you've got to be good at it. And that's what goes on every day in this school for "Projectionists." Some, of course, have an easier time at it than others. And sometimes having magical powers just gets in the way of the usual concerns that complicate a teenager's life. This complete in one-volume collection features stories that focus on different members of the student body. Step into this multi-dimensional world with these magical kids and see how each student deals with his or her special gifts! —CMX

Contents:
- The Sky That Enchants You
- Last Platonic Blue
- Little Girl's Close Game
- The World I Create
- Summer Vacation (Bonus Manga)

The super-expensive Joka Gakuen has a policy where the valedictorian, platinum student (PS), is exempt from school fees. Ai supports her large family in place of her parents, so she has little money. She takes Joka Gakuen's entrance exam because she wants to become the PS. Her dream comes true when she gets the top mark, but...

Collection of short stories:

1. Me and Incredible You
Ishibashi and Ryou have been friends - and lovers - for some time, but suddenly Ryou is thrust into fame and moves to Tokyo. Can their relationship survive the distance both in miles and in popularity? And what will happen when Ishibashi makes a rush decision to go visit Ryou in Tokyo?

2. Even Though the Time When I Dreamed Is Long Past

3. I'm Not Going Back to That Day

4. Bus Stop

5. Rebirth

6. That Day, A Summer Day

7. Oh! We Are the North High Cheering Party
Freshman Harada is in love with his captain Tachikawa. When Tachikawa sees him ****ing his shirt, can Harada ever face him again?

Special volume of 4 short stories, mostly about Kouji Nanjou's youth: 1) Kouji Nanjou Version 2) Bad Drug 3) Bad Blood 4) Zodiac

In order to determine which hot spring is to be the top overall, all of the hot springs within the region enter an unofficial tournament. The tournament is simple battle of capturing the enemy's flag, but the battle itself goes beyond any human measure. It is customary for a female to enter these battles. Carrying their pride and their flag, their only objective is to defeat their opponent. Hence they are commonly called "Fighting Spring Princesses." Kikko, the Fighting Spring Princess of the Aizen Hot Spring Temple, is an eccentric, hot-blooded person who is going to have her debut battle. Sit back and enjoy the story of Kikko's path to becoming queen of all hotsprings!