From Fifay.net: Tokyo, 2002. Tatsuaki dares to learn something novel to the most of Japanese: Beijing Opera. One day, he receives a Kouu mask from his master. Just for fun he put it on and is instantly transported back to Beijing, circa 1924! So begins Tatsuaki's adventures in the Beijing Opera House.

From Neptise Scans: Dracul's presence threatens humanity and the only ones who can stop them are the Exorcists, siblings bound by blood and granted the power to purge evil. The story centers around Vincent and Ryan and their struggle to become full-fledged exorcists.

Long ago there was a huge war between dragons which almost destroyed the world. The war was stopped in time, but the dragons noticed the impact their power had on the planet, and thus the light dragons sealed it for the sake of the land. Several centuries have passed. Now the dark dragons have risen! With the help of a mysterious goddess, they have recovered their ancient powers and aim for world domination. But before that they destroy Dragnier, home of the light dragons. The whole village is engulfed in flames but the townspeople survives thanks to Sara, a dragon maiden who temporarily petrifies everyone in order to protect them from the blazing fire, and went alone to battle the army. After the battle is over everyone recovers, only to see that their village is in ruins and Sara has dissapeared. Ryu, her young brother then decides to put an end to the dark dragons' scheme and also look for his missing sister. Thus the journey that will forge a new dragon warrior begins... From Baka-Updates: In the years following a great civil war between the Light and Dark Dragon clans. The Light Dragons are dwindling, reduced to hiding in small villages. The protagonist is Ryu, a young Light Dragon who awakens one night to find his home set on fire by Dark Dragons. After his sister is captured in the attack, Ryu sets off to rescue her. In the process, he joins a race to uncover seven mystical keys, before the Dark Dragons can use them to unlock a goddess of destruction.

Well, meet Nekoyanagi Kennosuke, a mysterious man who claims to make his living as a miraiya–one who “deals with the future”. Just when Yamamura Fuuta is looking forward to his last summer vacation as a grade-schooler, the self-proclaimed miraiya barges into his life and turns what should have been an idyllic vacation into a series of events shrouded in mystery and filled with spine-tingling encounters. Strange things begin to surface all around the skeptical and unwilling Fuuta. This is a manga adaptation of Hayamine Kaoru’s novel of the same name. Squeal, gasp, cringe, tremble, but don’t forget to peek between your fingers from time to time as mangaka Takemoto Itoe adroitly transports you to the quiet, fictitious, rural town of Kamikushichou, where the woods are brimming with life in the vibrant Japanese summer.

In “Blue Dragon”, “shadows” can fuse with their "hosts". This is the history of the teenager, Ral, and his "shadow", the Blue Dragon "Grado", that his father, a king, imprisoned together in the dungeon of the castle when Ral was a young baby. One day, when the "shadows" besieges the castle, his personal educator, Mio, releases him to protect the castle and repel the “shadows”.

Three years ago Ikari Kousei was out on the street with no place to go. Novelist Kiminari has a thing for stray cats, so he picked up the young vagrant.

The basic idea is that man is having a hard time finding food and getting rid of their trash, so science comes up with a bio-engineered animal that survives by eating trash, and is then killed to feed humanity. You can guess what may happen if a self-replicating, endlessly hungry killing machine got loose in Tokyo.

Tsutomu Nihei returns with another addictive manga (see BLAME!), set in the not-so-distant future (3005 A.D.). It follows a character by the name of Kanoe Zouichi and the mysterious Kanoe Fuyu whose luminous form is integrated into the system of his bike. They are agents sent by a powerful organization to retrieve the human with the ability to resist and transmute the NS5 infection that is spreading across the world, named Yion/Ion Green. However, their mission is delayed by the reckless actions of the Public Health Department's taskforce and the kidnapping of Yion/Ion Green. Will they complete their mission? Where has Yion/Ion Green been taken? These questions will only be answered as more volumes are released. The art in BioMega is similar to BLAME!, with its complicated concrete sprawl and ludicrously wide, empty spaces. However, things seem to happen at a more reasonable pace. In this manga, there is emphasis on the swiftness of the attacks made by Zouichi, such as the gun being sheathed just before the enemies fall to the ground. Speed is crucial in this manga, unlike in BLAME!, and the plot develops just as quickly. An interesting read, especially if one has enjoyed BLAME!

It's the Century of Darkness where monsters known as Vandels rule the world, and the Vandel Busters are the only ones who can fight them. When a group of Busters are killed in battle, they pass on their magic Saiga weapons to Beet, making him the strongest Buster ever. But Beet won't just fight the Vandels--he wants to destroy them and finally end the Century of Darkness.

Pronounced - Bee heun From: Easy Going Scans There are some heroes whose names you do not know, whose faces you have not seen... They operate secretly, and their actions can make a difference in the outcomes of wars. Be Huen is the story of such a man. To follow his story, one must search in the shadows, for that is the only place you could find him... Webtoon from Naver Please address this work as a Manhwa (Korean word for cartoons)

In a postapocalyptic world of heavy metal fantasy, the only thing able to save humans from orcs, lizard men, and other monsters is something even MORE evil. Sealed within a 14-year-old boy, the chaotic wizard Dark Schneider is unleashed to fight four mighty generals and their plot to resurrect the evil god Anslasax!

Born under a prophecy that will liberate and unite Japan, Sarasa has had to take her brother Tatara's place as the "Boy of Destiny." Fighting for the oppressed, Sarasa journeys across Japan to gain allies and defeat her enemies--all while keeping her identity a secret!

Nature made Ash Lynx beautiful; nurture made him a cold ruthless killer. A runaway brought up as the adopted heir and sex toy of "Papa" Dino Golzine, Ash, now at the rebellious age of seventeen, forsakes the kingdom held out by the devil who raised him. But the hideous secret that drove Ash's older brother mad in Vietnam has suddenly fallen into Papa's insatiably ambitious hands--and it's exactly the wrong time for Eiji Okamura, a pure-hearted young photographer from Japan, to make Ash Lynx's acquaintance... **[WARNING: Just in case you missed it, this is a TRAGEDY. If you don't want to cry, don't start reading it!]**

Updating

After being bullied at his old school, Makoto wants to be the main character of his own story. When he finds a bill with his face on it on a school trip to Kyoto, he takes it as a sign, which leads him to fall into a river. Once he comes to, he realizes that he has been transported back to the period of time in Japan known as the Bakumatsu!

Kazuki's had a 16 year grace-period of peace and relative normalcy; smuggled to Japan and raised by a kindly old woman he's grown up to be a bright and friendly boy. His childhood friendship to the girl next door is just beginning to blossom into romance and the death of his ward leaves him with enough character-building angst to set him up for just about any cliche shoujo adventure Yukari Ito has in mind. Unfortunately, Yukari Ito is TOTALLY insane and has decided to make him a vampiric kitten engaged from birth to a Nightmare. (from doki-doki)

From Tokyopop: An ancient seal has been broken, sending a flood of demons into the mortal realm. Hizuru Oborozuki and Takuya Hijou, descendants of the great savior who banished the demons in the past, must fight the evil spirits using their mystical powers. In order to give the world a fighting chance, Takuya uses his music to transform Hizuru into a beautiful warrior. Some things are worth fighting for, but is the Earth one of them?

Onodera Kensaku, a self taught martial artist, undefeated street fighter gets his ass whipped by a girl. Not by just any girl, but his home room teacher Asato Nanae and her High Left Kick. You'll see brilliant pictures of high quality in shading and facial expressions, with a twist of pervertal activities and one liners that will have your sides spilitting as you follow in the wake of Onodera's adventures to defeat Asato.

Sunao always thought she'd fall in love when she started junior high school. But there aren't any attractive boys at school. Still Sunao doesn't give up and meets two handsome upperclassmen. The kind and sensitive Toru and the cheerful and friendly Kaoru are members of the school Magic Club, which Sunao also joins. Then she finds out that Toru and Kaoru are actually thieves known as "B-apostrophe" who need Sunao's help as a master of the martial art Shinbu-ryu. They are trying to find the treasures hidden by the illustrious thief from the Taisho Era. According to the legend, whoever finds seven glass balls and solves the seven secrets, hidden in each, will win treasures worth 30 billion yen and learn a strange magic secret. Sunao is surprised by this and becomes part of the team because she is attracted to the boys. It's like being in heaven surrounded by two such beauties. But they are not the only ones after the treasures. Somebody called "B" always gets in their way. "B-apostrophe" might know who "B" is... Sunao is swayed by her complex feelings: She likes Toru, but occasionally feels a pull towards Kaoru and even to "B" when he makes contact with her!

Leto is employed as an apprentice by the skilled mercenary Alpha, from the mercenary unit Boreas. He struggles to rid himself of his apprentice status and be accepted by Alpha. However, as a mercenary, many painful encounters and terrible experiences await him…

Frederica, the older sister. She contracts a demon, hunts the souls of the wicked, and sends them to hell. She is the silver seal. Howly, the younger brother. He was given his life by a demon, according to his sister's wish. He serves and protects the silver seal. He is the warrior seal. What will the world give to them...

From Tezuka Osamu World: Aliens have created a tomcat endowed with the seven exceptional faculties similar to Astro Boy's. Supporting his owner, Tsugio, who is a sissy boy, this tomcat named Atomcat runs actively far and wide through the universe. --- This is a fascinating work resulted from Tezuka Osamu's challenging endeavor and daring to remake "Astro Boy."

Battling incredible odds and critical public opinion, a trio of astronauts fight to disengage a runaway generator in impossible conditions and silence longtime critics at the same time

From http://www.niko-niko.net/sites.html: Ashita no Nadja is the story of a young girl who grew up in an orphanage in England. One day she learns she may not be an orphan after all, and suddenly finds herself chased by some strange men. She ends up fleeing the orphanage and joins a travelling troupe of entertainers. The show follows her travels across Europe as she tries to find her mother and figure out who she really is. A bit more info about the manga is at http://www.niko-niko.net/nadja/ under 'Extras', and info about the anime series and merchandise.