From Midnight Scans:

Kureha Mimachi, a 15-year-old girl, has just transferred into Shiritsu Kenhono High School. However, there is something weird about this school, it is actually a school where the Princes and Princesses of the beast-kind go to!

Even though Kureha is human, she is there as a way to help the students lead their lives peacefully with humans and has the role as the "rabbit". Will she be able survive without being eaten by the students? Only time and her hidden bodyguards will be able to answer that...

Accompanied by a talking lantern, Mika pursues her sister on a quest to retrieve that which was stolen from her long ago.

The Freezing Pair Love Stories manga tells the story of how the various Pandoras and Limiters met. The first chapter focuses on the characters Ganessa Roland and Arthur Crypton.

Arisue Sei lived as happily as any normal kid would, just him and his mother -- a particularly private woman -- on an outlying island of Okinawa. There were also his friends Toichi and Moichi. The only unusual things about Sei were his sharp instincts and high intelligence. But everything changed when his mother was killed and he was kidnapped by the people of Neo Genesis. Now, six years after the kidnapping, Arisue Sei has returned to Japan with the title of "Doctor" at only the age of 18, and he's not the Sei that his friends remember. There are bodyguards with him who protect him from others who wish to possess his superb intellect. He says he's come back to assist with the research at Rakuhoku University, where Moichi now works, but here is where the door to Sei's secrets just begins to open.

Nostradamus prophesied that the world would end in the seventh month of 1999. Today is July 21st, 1999. Ever since she was little, Maruyama Sakura has put her faith in this prophecy, has believed she will die at age 19. Consequently, nothing has seemed all that important to her. As the final days of her final month tick down, Sakura is whiling away the last of her time. Then Sakura meets Mori. Sakura has ten days until the end of the world.

From ShoujoMagic:Ryou has the biggest breasts of any shoujo manga heroine to date! But life isn't any piece of (cheese) cake, because she's constantly being assaulted by perverts who want to cop a feel. The first man who doesn't obsess over her assets turns out to be the first man she ever wants to have obsess over her, though there's something strange about him... One time she's with him, he's a sweet masochist, the next time he's a bold sadist. Which does Ryou like better? The S or the M? She'll have to make a choice, because it turns out that she CAN'T have both. Find out the surprising reason why one face has two personalities!Includes short stories:Volume 1:Gattsuiteke! - It's Unintentional!Chinatsu has liked her guy friend, Shinnosuke, who she fights with allot, for a long time... Will she be able to be together with him when there's another guy confessing his feelings right in front of him?OnlyA sort of prequel about Masaki and Shingo when they were younger, but mostly focuses on Shingo because he's the more troubled one.Volume 2:Prince of SummerNozomi-chan's got two of the school's most popular guys, Ken Tamae and Kaname Yuuki, confessing their love to her at the same time... What's a girl supposed to do when her world is suddenly so confusing? Especially when she used to wish that she could get her hands on one of the two...Volume 3Shiitake - The Mushroom GirlKeiko Shita sees herself as a dark person, and so does everyone around her... But what if that could change? What if the popular boy, Teru Hinata, could change that?

From Tokyopop: Mikako, our over-zealous heroine, has a sister-complex so strong she won't let just any man wed her sister. On an undercover investigation to learn more about the newest bachelor, she ends up moving in with him! Plus the guy is a highschool kid just like her! Mikako's relationship with him starts to grow. What'll happen between Mikako and him?!

The story revolves around Tsunashi, the child of royalty who was left behind in the lost kingdom of Karan. He is expected by those around him to awaken his great powers that sleep within him in order to revive the kingdom — but rather than fighting, Tsunan enjoys playing in the world of books. However, he must become serious soon, as a new army is threatening to invade Karan.

From MangaHelpers:
Yasaka Tokiwa lives in an unusual time, and according to his dreams, it's about to become even stranger. He's been having a dream of a woman called Ri'in ever since the robot, who he calls Makina, came to his home. He and Makina attend the same school, where their other classmates include a secret ninja (Kusanagi Kanata) and a sorcerer (Yata Haruka).
When Tokiwa, the robot, the ninja, and the sorcerer rush to rescue the student council president from a demon, the boys find that they've all been having the same dream! What is going to happen to their world?

At a boarding girls' high school where every student is an assassin, they target only one life: "The Hare", who appears to be a girl named Ichinose Hare. Similarly, "Azuma Tokaku" is an assassin who transferred schools to target her, however she gradually became attracted to "Hare" and decided to protect her.

Extreme school life START!

Inuyashiki has a family, a wife and two kids, none of which care about him. When he learns that he has only three months to live he realizes that the only one who will miss him is his dog. Shortly after this realization he is killed in a crash landing by aliens. He is rebuilt by them as a machine with a human exterior. How will his life change now that he isn't human.

This is a manga with several oneshots.

Story 1: Pure Love Strip
Story 2: Beautiful Beast
Story 3: Morning Waking Kiss

Story 4: Daisy by AMANE Yuko

Story 5: Lustful Darling
Story 6: Love Princess and W Prince
Story 7: Yokujyou Nyan Nyan (Alluring Nyan Nyan)

Who do you think lives next door? A college student?
A secretary? A foodie? A quiet sort?
Or a killer?

Humanity's peaceful days all at once transform into an unspeakably odious hell.
The sudden invasion of wasp-like insects, along with gargantuan "dolls" wielding their enormous alien weapons, annihilating everyone in their path.
In the middle of the chaos, high school first-year, Iruma Ikaruga, fights to save his best friend and his beloved senpai from the dolls' assault with an unyielding spirit.
However, all that awaits him is despair.
Just what are the enormous puppets known as "Dolly"after?
What fate awaits Iruma?
The curtain has risen on humanity's "puppet show" of unimaginable despair, and the battle for survival has begun.

From: Easy Going Scans

A continuation of Brave 10. The main protagonist is an Iga ninja named Saizou, who meets an Izumo priestess and protects her on her short journey to Sanada Yukimura. Sanada Yukimura is a powerful warlord in the Sengoku era. Sanada wants to gather 10 warriors, a party unrivaled in skill and power, to set his still secret plan into action.

Marriage is in shambles. But still their pride stops them from seeking each other. Thats when both drift out to get the taste of some 'Drugcandy' (adultery). A tale of two people exploring out of their relationship.

Jang-Mi and Taebong's long-time friendship is put to the test after they both sleep together for one night. Is this love or just sex? Read H-mate ( Hメイト, H메이트) by Turtle Feet now!!

Maybe you'll like: 
+ Brawling Go Manga
+ Skill of Lure
+ Sweet Guy
+ H Campus
+ Yahalue
+ A World That I Rule

From Yaoi Is Life:

Saichi and Kotetsu are drawing manga as a team while living in extreme poverty. At loss for an idea, both of them decided to write a “real BL” based on themselves! They rise to be a star in the BL world, but…?!

"The other short stories within explore a schoolboy crush that turns into something more, an antagonistic relationship between a wealthy heir and his crush, and the love life of Usaki, the editor of Saichi and Kotetsu’s stories" (June).

From MangaHelpers:

Shou lives out in the country. He has a big crush on his childhood friend Sora, but is afraid that she thinks of him only as a little brother. One day, Sora announces that she was abducted by aliens. Later that day, Shou confesses his feelings for her and she dies shortly afterward. Shou is still in shock from her loss, when an alien girl named Lila comes down from the sky. She has a disk that contains a brain scan of Sora, and she can run Sora's personality in her own body. She also wants to have a child with him. Will Shou be able to cope with all of these sudden changes, and will he be able to keep Sora with him after all?