From Fantasy Shrine:
Taking care of his homeroom teacher, Wakasa-sensei, the kindhearted Kakeru is the only person who knows the outwardly charismatic teacher is in truth, a bully! Whenever they are alone, Kakeru tries unsuccessfully to evade Wakasa’s advancements. However, Kakeru couldn’t help noticing Wakasa’s tenderness at unexpected moments. And then, at the start of the 3rd year in high school, a new teacher from Wakasa’s past and a new student arrive…

• Unexpected Disaster
When the cat he's not supposed to have gets into his next door neighbor's house and makes a mess of some valuable paintings, a young scuba instructor finds himself blackmailed into nude modeling by the perverted artist.

From Tokyopop:
Shi-Hyun is a girl who has nothing but bad luck - at least, that's what everyone believes. In some ways, Shi-Hyun herself believes this and tries to stay away from the people she loves the most. As a result, she has developed an outer shell, making her look tough and indifferent even with the constantly bullying. But when she transfers to a different high school, a fresh start brings unfamiliar characters - and new challenges - into her life.

From Del Rey:

Hana Suzuki loves only two things in life: eating and sleeping. So when her handsome classmate Izumi Oda talks her into joining the school hockey club, how is she going to survive getting up early, working hard, and playing well with others? True, the Grand Hockey Club is full of boys - super-cute boys at that - so maybe it won't be so bad after all…

The wierdest, wildest, most-gratuitous orgy of teddy bears, super-heroes, pimp-outfits and vaguely underage sex we've ever seen. Includes sex through a pair of ripped pants, a teddy-bear hostage situation, and lots of scandalized kitty-cute uke boys who seem totally unaware of the kind of manga they've showed up to participate in.

She can not stand hot weather and wants to live in Hokkaido. He fears cold weather and wants to live in Okinawa. They are a mismatched pair but will this prevent them from being together?

15 year old Kasumi Kishimoto arranged to stay with her aunt when she entered high school. Upon ariving she is surprised to learn that there are four other people boarding there, all of whom are male and attending the same high school. And when one of them walks in on her bathing on her first night there, she wonders what she's gotten herself into.

From Go! Comi: Amane Kamori lives in a rural village, isolated from modern society. She is a powerful medium, able to control living creatures and things through the use of its real name. Her main companion is Hyoue, her guardian demon dog, who she powers up through kissing. Forbidden from revealing her identity, she and Hyoue are allowed to move to Tokyo. Together they work to help both the living and the dead deal with various troubles, while also adjusting to high school society. Amane must deal with jealousy from classmates, who don't understand why the handsome Hyoue is so devoted to her, as well as with her own family attempting to force her to come home. The family even attempts to break her bond with Hyoue. Meanwhile, Hyoue devotes himself to his master, while struggling to hide the forbidden feelings he has for her.

The main character finds his possessions "abused" by some unknown person until he finally caught the culprit... masturbating to them?

Entrusted with an utmost mission to identify and to protect the next chief of their tribe, Ninja Sakura transferred to a high school and fell in love with the class rep Takagi. Can Sakura succeed both in his mission and in love?

Why would Kashiwaya be so bothered by Hibino’s adam’s apple? Kashiwaya couldn’t figure out the reason and thought maybe he might be a vampire. After pushing Hibino down and started licking at his throat, Kashiwaya felt so good that he didn’t want to stop. What is going on? The pure and innocent love story of a unique high-schooler, Kashiwaya, and his classmate, Hibino

From Intercross:

• Sweet 16
Kataoka Nanami had made a promise with her childhood friend Eiji that once she celebrates her sweet sixteen, they are to marry. However, nowadays Eiji only seems to be interested in surfing and has forgotten all about the promise. Will Nanami be able to revive her childhood promise?

• Kira Kira Frozen
Nakazato An has always loved ice skating since she was young and dreams about becoming a professional. But when it comes to being accepted into a school in America and leaving her boyfriend Ya-chan behind, how will An be able to handle this situation?

• Harumachi Platform
It's spring, which means a new school, new semester, and new challenges for high school student Riko Kurosawa, who is not looking forward to this troublesome period of time. That is, until one day, a boy hands her a "magical" train ticket, and suddenly, Riko's mornings are a lot brighter. And at the center of it all is the boy who shares her train rides...

• Itoshii Anata e
Chiharu writes letters to her sensei, Akiyama, who never returns her feelings. But after one day when Akiyama tells her he has a beloved, he accepts her letter...?

• Totteoki no Uta
HYBRID is a newly formed band that hit the charts really high because of their lead singer, Aki. Yuri's been friends with Aki since they were kids, and, obviously, she's grown feelings for him. With Aki's band hitting it high, and getting really popular, is Yuri REALLY happy about all this?

From Selene Scans: Minami has a crush on Ryouta-kun, but all he does is tease her all the time...

From JanimeS:

Kang Han-Se and Ban Ha-Da have known each other ever since childhood. They are close enough to sleep in the same room together at their current age.

"Three men for you," Kang Han-Se's mother tells Ban Ha-Da, on the day of graduation. As soon as Ban Ha-Da's life as a high school student starts, her love life begins as well.

Kotarou has an clueless touch--he has an unusual type of ESP that is transmitted via physical contact. When he accidentally awakens his cousin Tatsuki's powers, he comes to realize that there is much more to his powers than he ever imagined!

From Selene Scans:

New school, new teachers, a new class, new friends... and basketball.

All these things that Ishizuka Sakura are looking forward to are rudely interrupted by the fact that she's running late on her first day of high school! Everything is a mess with her being told the wrong directions to the auditorium, and after school when she looks to relax and play some basketball... she meets the legendary Miyamoto Hayato and Tadashi twins.

She wants to team up with them, but will they accept...?! Read and find out!

Yee Su-yoon is a high school student who has everything going for him – top of his class, top fighter and a Barbie-like girlfriend named Kang Ha-eun.
But why does he mistreat his girlfriend and seem to always protect a girl named Chae Shin-hee?

Two races of half-bird half-human creatures live undetected among humans: The cockatrices and the basilisks. Kozakura Sora is a young cockatrice who switches schools for his assigned task of keeping an eye on Karasuma Rin, a basilisk and student council president. However, on his first day Sora flies into Karasuma Kai, Rin's younger brother. A fateful meeting that changes everything...

For some reason, the sadistic demon prince Beelzebub is living in the human world and attending high school. He begins a strange friendship with his classmate Hanako, after she defends him when he gets beaten up by a gang.

Note: Original language image (i.e. no English subtitles) is unavailable.

Contains 3 oneshots:

1) After School Kiss
All the guys think Fuyu Yamashita is the stupidest girl in school and dare the guy who does the worst on the next test to go out with her. That guy turns out to be Minato Sakurai, the scariest guy in school. Poor Fuyu?

2) Making an Angel
Sayaka Sunohara a highschool student and a talent scout find a cuteish boy playing with a cat. Thinking that he would make a perfect image of an Angel she brings him to her mother's agency. After the makeover, he fits the image perfectly. When Sayaka asks him "what would you like to eat?" as a treat for his successful photo shoot. He say "I would rather have you instead...". what would Sayaka to do with this Cute Angel or rather a Bratty Devil?

3) Young Nobleman Lock On!!
Iori Seto known as the "Stupidity Queen" has a crush on Motochika Ishida who happens to be a school elite, a cold student body president plus the chairman's son. Just to stay close to him she decides to join student body. But all she does is cause trouble for Motochika. How will Iori be able to lock on this cold young nobelman?

From VIZ:
In company-owned rabbit-hutch apartments live tenants who can't afford to live anywhere else, and the apartment complex in which high-school girl Hatsumi Narita lives is ruled over by the rumor mongering, self-righteous Mrs. Tachibana. Get on Tachibana's bad side, and life becomes hell. When Hatsumi has to buy a pregnancy test because her popular sister Akane's period is late, Mrs. Tachibana's son, Ryoki, who used to bully Hatsumi as a kid, promises not to tell the world about Hatsumi's secret, only if she becomes his slave. Suddenly, Azusa Hatsumi's protector in their youth, reappears to save her again! He's moving back into the neighborhood! Despite the budding romance between Hatsumi and Azusa, Ryoki has control over her through the secret that could ruin the lives of everyone in Hatsumi's family, and he hasn't forgotten who his slave is.