From Intercross:

For all of Mao's life, she has longed to be girly and have tea parties with beautiful girlfriends. And finally, she has that dream right in her reach, until she walks in on three boys changing at her private all girls school... What's a girl to do when another girl she admired turns out to be a guy?!

From Shoujo Crusade:

Karin HATES guys. She can't stand the sight of them, let alone be near them. But after a near death experience she finds herself waking up to a guy she doesn't know, within a guy school and in a guy's body!!?!

From Shinmakoku Scanlations:

Yosemine Takumi is a difficult student to handle. He's used to get what he wants by using his family's strength in school. The new Infirmary Nurse, Tsutsui, is determined to change all that. He's not going to let himself be bullied by Yosemine, or anyone else, after all these years. But Yosemine has fallen head-over-heels in love with Tsutsui-sensei and set the goal on owning the nurse for himself!

A boy and a girl are forced to join hands for all eternity!?
In a land ravaged by an epidemic known as "Troy", the only people with healing arts capable of stopping the seizures caused by the disease are the Sisters. Although they have a high resistance to the disease, they are searching for a person who is truly immune, so that they can find a cure. The main character is Sister Elraine, one of the Sisters who becomes infected with Troy. But, when she touches Kiri, a seemingly ordinary boy, her seizures stop. Could he be the one!?

In volume 1 is included the oneshot Island:

A story that takes place on the day Aira turned 14, and learned the devastating truth about the island she lives on, which is completely surrounded by a huge wall...

Tsuchie Takeshi has dreams of when he played with Hikari-chan as a child. He remembers her as a kind, sweet girl. However, one day on the way home from school, Takeshi is abducted and taken to a huge house, only to find out that she's become an arrogant, violent dominatrix (emphasis on violent). Furthermore, she says that he promised to marry her! How will he adjust to her new personality, and living with her as a new son of her prestigious family?

From Fantasyshrine:

Usami is a chef of an Italian restaurant called MIYA. One day, the whimsical owner decided to turn her restaurant into a "bishies restaurant"! Usami refuses to be part of this frivolous idea and will do anything to get out of it. Which led him to strike a deal with the owner. So now he’s stuck training Komiya, the spoiled, playboy son of the owner, to take over the business. But Komiya decided to make a deal of his own—!

[From ShoujoMagic]: A collection of short stories from the pages of Sho-Comi! Story 1: Side Seat de Daite. Mamii is in love with Sawaii, the person everyone considers to be a dork. When she confesses to him, he tells her he has conditions for dating her. What are the conditions? And is Sawaii the person she really thinks he is? Story 2: Brazen Lovers. three chapters Yuuna's mother moves them everytime she breaks up with a boyfriend. This new place is a real dump. Annoyed, Yuuna heads off to the beach where she meets a very sexy guy. Sou says "Lets always be together." but when Yuuna wakes up he's gone! Two people like this are bound to meet again... Story 3: Feel It, Roast Virgin. Rika is a virgin and is very nervous about her first night with her boyfriend Yuuya. It doesn't help that Yuuya tries to do it everywhere, outside, at school, he's ready! But will Rika be ready? Story 4: St. Gal Chick Valentine's Day. Mika's school has separate buildings for boys and girls and the girls have asked Mika as a student representative to get them co-ed classrooms so they can spend Valentine's Day with school idol, Subaru. Mika vows to try her hardest, even though Subaru annoys her. But maybe he's not such a bad guy. Story 5: Secret Apple. Sakura Kazuki and Katou Ryu are lovers who have been meeting secretly for two years. Because they were once step siblings, and their parents had a messy divorce, they can't tell anyone. Will they ever be able to love freely? Story 6: Double Face The Dangerous Classmate. A short 6-paged funny.

From Solaris-SVU:

"When the sinister Dark Guy and his evil army, Black Pierrot decide to take over the world, they decide to start from the Japanese countryside. Luckily, however, the great hero Blue Hunter is there to thwart him. But when Blue Hunter saves the young maiden Tachibana Honoka, he finds himself assaulted on another front... By her affection. Now he must juggle defending the earth, dating Honoka, and simultaneously trying to get her to take notice of his homely true identity, Fuwa Shinpei."

Childhood friends Chihiro and Keigo are living together under one roof. They're lovers, but they've only ever kissed once. To Chihiro, it hardly even feels like they're going out, and he's getting impatient! And on top of that, he suddenly has a rival!? It's ever-loyal Keigo and headstrong Chihiro's heart-pounding, heart-breaking LOVE!!

-DMG

An entertaining romp from Modoru who has once again veered away from her dark side and visited the side of her humorous stories. Of course it's still rather twisted. A couple of high school delinquents (Teru and Miki) discover that despite being from opposing sides, they have no objection to a bit of a sheet tumble with one another. Doggie-style refers more to how one of them is referred to as a dog by the other. Neither of these guys is an innocent, and it will be interesting to see where it goes.

The series was named after the Slam Dunk doujinshi "Dog Style" Modoru wrote in 1994.

When the hot-tempered Han Hye Won accidently insults the handsome jjang of Han Hwa Go, Sun Woo Bin decides to pay her a visit... with his entire motorcycle gang, ready to see some blood. So how does that lead up to a kiss and the infamous captain begging for a date? Do you want to try?

Japan in the future has a massive over-population problem. Scientists have traced the root of this problem to one particular individual, Junta Monamari. According to their records, Junta was a "Mega-Playboy" who had sired children with over a hundred women. Each one of his sons had inherited the Mega-Playboy gene too, so the problem grew exponentially from thereon. Enter Karin Aoi, a "DNA Operator". Karin is sent back to the past with a mission: to alter Junta's DNA and prevent him from ever becoming the Mega-Playboy, thereby eliminating the world's overpopulation problem. Junta's DNA can only be altered by shooting him with a special bullet called DCM which contains the chemical for suppressing the Mega-Playboy DNA. In return, Karin gets a vast sum of money... enough to make all her dreams come true. Will Junta become the playboy he is destined to be, or will his better self prevail? But Karin is falling for the real Junta too... and what of the sweet and kindly Ami who has secretly loved Junta all her life? What will happen to future Japan?

Diotima is set in 2092, far in the future. This manhwa is considered sci-fi for that. However, the manhwa's plot is "life". The episodes involve lives of captain Namer Joon and her crew onboard the space vessel, Diotima. The plot goes a little further and tries to convey conflicts between Earthians and Moon settlers. There are clearly some mysteries about Namer Joon, Diotima, and its creators.

Jeong-Hwan received a letter from his sister Ji-Yeong that said, "Please rescue me, the devil is here!"

His sister goes to an all-girls school and in order to rescue her, he must disguise himself as a female student. In this school, all students are candidates to become "the bride of the devil."

A certain boy decides to summon a demon to help him with the search of his beloved...

1) Eikoku Kizoku Goyoutashi- While working at her shop, Chiyoko Shimakura was approached by a young foreign male asking for a date. Though, at the same time, there have been a lot of incidents regarding a young foreign man conning women for their money in the neighborhood. Is he the one that has been conning others? Or is he really her prince charming? 2) A Thousand And One Nights - An encounter with a stranger ends up with a young girl becoming a temporary secretary. 3) Mitsuboshi School Days - In order to chase the 'love of her life', minami joins a cooking school 4) Love Bite About a girl who didn't know what to do with her feelings, thus leading the boy to believing that she hated him.

From NOIR:
Arisugawa Kiku (aka Arisu) is a Japanese high-school girl who gets really nervous around foreigners. Arisu's father is getting transferred to New York for his job, so her mother pressures her to sign up for conversational English lessons. Arisu reluctantly goes to class only to discover that she's already met Ish, one of her new instructors! The two had fought over the last can of mackerel at the 100 yen shop the day before. Despite being a rude and sarcastic guy, Ish is actually very popular... Why is it that guys with glasses are just so SEXY?!

Eensy-weensy Monster is about a girl, Nanoha, who spends an ordinary school life with two merry close friends, reuniting with Hazuki, an archrival from grade school. From her anger, a mysterious monster appears!

Sengoku Akira and his classmates are travelling on a plane when it crashes onto an island inhabited by species thought to have been extinct. The situation becomes increasingly desperate as some of Akira's classmates are eaten alive, while some kill others in desperation. Now Akira and a few other survivors are trying to survive what seems to be a horrible nightmare.