From Bliss: While trying to find a job, Manji, a for-hire bodyguard, also known as "Akainu (Red Dog)", meets Karu who works for "CARDS". Discovering that Karu's mission is to exterminate the deadly "TOYs", which mindlessly attack any living things, Manji can't help but forcefully tag along to relieve his boredom... Edit: Officially a Shoujo manga, though the artwork and action seems to differ.

14-year-old Eriko finds herself left in charge of her younger brother Daigo when their parents suddenly disappear one warm summer evening. Trapped in a world that is very much like their own save for the lack of their parents, Eriko and Daigo find themselves desperate to return to the worrywart mother and apathetic father they never thought they'd miss so badly...

From Aerandria Scans: Meet little Lulu - a vampire girl in whose right eye flashes crimson sparks, and the giant Gau. There are three places in the human world that made them who they are now - “the school,” “the church” and “the hospital.” What happened to Lulu when she was still human and how did she become what she is now?

From Viz: Sudou Mikuzu has a very special talent--she can see ghosts. And because of this predisposition, she's become a magnet for all sorts of unwelcome monsters. Luckily for her she's just met Seto, a friendly, cross-dressing young exorcist. Sudou needs protection from all the creepy phantoms bugging her, and Seto needs to practice his exorcism skills. Consequently, the pair decides to team up and help each other. In return, Sudou promises to bake a cake every time a ghost gets zapped!

Most girls are crazy about jewelry, but not Anis Yamamoto. Not since her father gave her a rose choker as a child, claiming it was a protective amulet which would safeguard her from harm; however, if she ever took it off (a feat easier said than done!), she would be afflicted by a “punishment” of some sort. Not like it matters to her though, since the attention it attracts around school from faculty and students alike isn’t something she’s particularly fond of. But after a certain incident causes the choker to disappear, she realizes that this punishment her father spoke of might have been a bit more than she bargained for!

Updating

Yuuki and Michi -- two childhood friends who drifted apart are reunited inside a mysterious train.

From Turtle Paradise: Meet Matsuri, a high-school girl in love. Typical, right? But no one knows what’s in Matsuri’s special protective charm… Mimori, a god of protection! Mimori takes the form of a miniature boy and protects Matsuri from danger while supporting in her quest for romance… Until he realizes that he, too, has feelings for her! Can true love exist between a god and a human?

Pinocchio prequel ~ This little series tells the story of the 1st winter Ga on became a ghost.

From HMR: The main character, Rui, is a hardworking and happy girl. One day, her neighbor moves away and leaves behind a stuffed panda bear. Rui decided to take it home, since she's always loved panda bears. She goes to sleep with it one night, and discovers herself in bed with a stranger (who also happens to look like her ideal man) the next morning. He introduces himself as Peter, and that is how she ends up meeting three other guys...

Weak, bullied, and pessimistic about life, that's Setsuna Kashiwagi. On the verge of jumping off a bridge, a mysterious man appears behind him and offers the contract "10 million yen in exchange for your life in a year." Skeptical at first, he accepts. Waking up the next morning, thinking it was just a dream, he notices 2 beautiful women sitting beside him. They are Kanna and Rena, Oni princesses here to claim his heart in a year.

From Taruby: Our protagonist, Moji Shimeta, just so happens to fulfill the stereotype for being a worthless human. His inability to carry out a conversation has left him at the bottom of the barrel as far as friends are concerned. That Shimeta fell in love with the school idol Ishikawa Yuuko, however that kind of love is absolutely, perfectly, and completely impossible. During this time, the messenger of the gods, Osaki, appeared to grant Moji's request with a price attached concerning Moji's cooperation in catching some runaway evil spirits. However to catch them all, Osaki uses Moji as a vessel to become a servent of Uganomitamanokami (aka Inari) called Youko. Lots of Ecchi situations and humiliation abound at Moji's expense.

Momoko is a girl who was born into a witch family in which most of its female members possess magics. Yet they can only reveal their magical capability to "the one" i.e. their soul mate / spouse. The more magic she uses in front of strangers, the more parts of her body would become cat-ish (such as cat ears and whiskers), and if any stranger learns her true identity she would turn into a cat completely--like her mother! Having joined the magic club in her school, Momoko has used her ability too often that her cat ears pop out every once in a while so she must find "the one" as soon as possible, but her candidates have already become suspicious...

Being beautiful is never easy, especially if you're an eighteen year old boy like Yoon Da In who is constantly mistaken for a girl because of his delicate good looks. Da In is, in fact, anything but delicate. He is the ringleader of a group of tough kids in an all boy's school, and he's quick to beat the living daylights out of anyone who even hints that he resembles a girl. If that wasn't hard enough for a regular teenage guy to cope with, his life is about to take a shocking turn for the worse. When Da In stumbles upon strange happenings in the forest, he gets sucked into a world of vampire intrigue and sinister romance that he never knew existed. And he learns that there are worse things than being turned into a vampire: being turned into a girl?!

Matsuri Ichimatsu, Haruno Koume, and Sanguubashi Takezou are old friends with one thing in common: despite their good looks, they're incredibly unpopular with the ladies. But what does Polaris have to do with their fate? And will they ever get that harem they've always wanted?

A cyberpunk-ish spin on the legendary hero, Momotarou.

In a small village, there is a legend about a person born from a sakura tree one thousand years ago. Though she appeared human in form, she could not understand love, and was therefore cruel. She was eventually destroyed. Now, the mythical Sakura tree is going to attempt to create human life once again. This time it is up to two high school students, the incredibly handsome Tasuku and the love-allergic girl Honomi, to teach the Sakura Child about love.

Hard working, level 1 magician Konoha is apprenticed to lazy Knight Protector Saionji Ikumaru. They both work to keep the etherworld sealed away from their own but sometimes the seal doesn't work. Dragons, demons, and now Ishtar, the goddess of Venus. Will Ishtar help Konoha win her master's affections? Or will she take him for herself?

Saiki Takaya, a guy who is easily misunderstood, one day finds a flask containing the succubus Lilim. She is very attractive but, she also has the tendency to drain the life force out of people. She surprises the life out of him (literally) when she kisses him unconscious. The girl, Lilim, turns out to be a succubus who gains energy by kissing guys. Lilim then flies off for more "food," but returns later, saying that Takaya's life-energy was the "tastiest." From then, Lilim is accepted by Takaya's parents as a live-in girlfriend of sorts, and Takaya's heart seems to start wavering towards this voluptuous devil.

From RebelliousArt: Asahi, desperate after the loss of her best friend and boyfriend, came to the abandoned elementary school above the hill. It has been said that it's a cursed place that it will be the last place you will tread in. Those who live will not be able to return. And there, Asahi meets...!?

PSYREN follows the adventures of Ageha Yoshina, a high school student who is chosen by Nemesis Q as a participant in the Psyren games. The games take place in a world known initially as Psyren, which is revealed to be the real world in the future. Ageha and his friends attempt to alter the future and save the world from becoming Psyren.

The father of high school student, Katsuragi Yako, has been brutally murdered. The incident filled with mysteries drives Yako's daily life into confusion... As the investigation progresses slowly, a man named Nougami Neuro appears before Yako saying that he wants to eat the ultimate "riddle"...! The Demon Neuro has a raging hunger for ‘mysteries.’ Being dissatisfied with his current regime in hell, he’s come into the mortal realm in order to satiate his ever-growing appetite. The murder case of a young girl’s father seems to be sufficiently enticing for the Demon’s needs... But what else might happen between these two?

Pilot for D. Gray-Man.(http://mangapark.com/search?q=dgray-man)

From Transcendence: High school student Asahi is forced to provide blood to a childlike vampire Hikato, and becomes his ‘temporary’ mother, until he reverts to his original self. When Asahi finds out that Hikato stayed behind to protect the human world, how will her feelings towards him change….!?