From Easy Going Scans:

Sui and Sou are a pair of twins who are starting high school. Though raised by occultist parents, they were supposed to have a very normal high school life. However, once they arrived at campus they not only encountered werewolves but also vampires and even sorcerers! As more strange people appear one by one, will the twins' secret be uncovered?

From: Easy Going Scans

DoAh Lee, a seemingly "normal" high-school boy, gets caught in a strange and embarrassing situation. Before he knows it, he is blackmailed into becoming the manager for a team of quirky, unruly, not to mention slightly lazy, heroes. Will he ever go back to his "normal" high-school days?

From Hokutonogun.com and HappyScans:

A former professor of archaeology, Hieda Reijiro was expelled from the Japanese Archaeological Association for claiming that youkai exist. Ancient horrors come to life before our eyes as the youkai hunter wanders the land to find proof for his theory.

The included one-shot, "The Living City", won the seventh Tezuka Award in 1974.

Not long after Kohei lost his parents, he saw a silhouette of a person who seems like trying to commit suicide by the sea. He immediately reached out and he's even more surprised when that person transformed before his eyes ...

From Easy Going Scans:
The story of a boy and girl whose lives were one day entwined by red string. Literally.

From Easy Going Scans:

In the near future, Mother Nature has decided to fight back against all human encroachment.

The world has entered your standard apocalyptic scenario that you can find in many forms of fiction, but it's right in the middle of the apocalypse actually happening, rather than in the aftermath. Vines and foliage entangle cities, as large wooden mech-like creatures called Arethusa (named after one of the mythical Greek Hesperides that tended the gardens in a remote corner of the world) rampage through cities.

Souma Shin, a punk kid out of Japan, went to visit his brother Ken, but all hell breaks loose as Shin finds a group of small kids being used for military purposes. He tries to save them in the confusion created by an Arethusa invading the compound...

From Yen Press:
Yuki Nagato, the shy president of the literature club, has never been very sure of herself around other people. But around Kyon, the only boy in the tiny, three-person club, Yuki finds herself faltering even more than usual. For Kyon, and for her precious club, Yuki must find her confidence and let her true personality shine! Enjoy taking a fresh look at your favorite characters in this brand-new story set in the world of The Disappearance of Haruhi Suzumiya.

Minato is a total loser. He's failed to make it into college twice, he's unpopular with women, and he's unemployed. He seems like the classic-useless-shounen-harem-male-lead...
In truth, however he's actually an Ashikabi--one of a mysterious set of "masters" in an awesome battle royale between hordes of cute girls called "Sekirei."
Since this is an ecchi manga, with their attacks they often happen to... you guessed it--ripping each others' clothes off! Looks like his luck's taken a turn for the better.

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 Batoto:

Masumasu Academy, an Academic City floating in the Pacific, is home to children with mysterious powers known as "Fiction". "Fiction" grants them enhanced physical prowess, as well as one additional ability. What will happen when a time stopper, Kazuma, meets a cute girl with the ability to move at lightspeed, who knows and is searching for him?

From Jcafe24: Corpse Party: Blood Covered is about a group of high school friends in Kisaragi Academy. Kisaragi Academy was built on the grounds of Tenjin Elementary School, which was demolished after a string of disappearances and gruesome murders. After a mysterious earthquake, the students find themselves trapped in an alternate reality Tenjin Elementary School, where the murders of others trapped before them have continued unabated...

Lin is just an ordinary high school student. But on the day she transfers to a new school, she gets a video game, which sends her to the world of King Arthur. There, she meets a mysterious wizard, who tells her that her mission is to find and gather the Knights of the Round Table and find the Holy Grail.

From Asclepias Scans:

Park Min Gyeom is a human with a disease that makes him produce excess blood. Kim Chun Sam is a half-vampire who needs blood to live. So begins an unusual symbiotic relationship between "predator" and "prey."

Note: This series contains additional (optional) 18+ scenes.

An action fantasy manga that takes place in both this life and the next, featuring the boss of the guard tribe that protects the city, Jang Gwang Nam.

What would you do if you could stop time? Moritani for one is using her unusual ability to stop time for three minutes a day to observe the people around her. One day, she chooses to "observe" class idol Murakami's panties - only to find herself in a very compromising situation when her classmate turns out to be immune to her power.

From Go! Comi:

Like most teenagers, Mashiro Ichijo has a secret. But Mashiro's secret is that he’s neither fully male nor female! So far, Mashiro's been able to live his life as a boy, but all this changes when he's informed of a new class he must take in order to graduate from his elite prep school. To pass, he must find the “Key”…and the only way to find it is to enter into a nightmare world where his body and soul are put at the mercy of the worst kind of enemies: his classmates!

In the corner of a certain town, there is a teashop where the master, Tsukasa, obtains and cares for plants from the depths of hell.

SERIES 5: Vento Aureo
Set in 2001 Italy, the story follows Giorno Giovanna, son of DIO, and his dream to rise within the Neapolitan mafia and defeat the boss of Passione, the most powerful and influential gang, in order to become a "Gang-Star" and make the world a better place. With the aid of a capo and his men, as well as his own resolve, Giorno sets out to fulfill his goal of absolving the mafia of its corruption.

Sihoon is a boy who lost his parents and lives with his older sister. This story begins as he meets Mephisto that came to the world to find Faust and makes a deal with Mephisto to supervise the fights between Mephistopheles and Faust.