As a 6 Year Old, Rintaro is diagnosed with Henisei Tashu Ijou Syndrome (also known as Hentai Syndrome), a disease that could kill him if he gets sexually aroused. To save him and provide a way for him to live as normal a life as possible, his father teaches him the ways to control his body and mind for ten years in the mountains, with the martial art of the Koei Sougetsu. When he's 16 he chooses to enroll Nangokuren High School, which he assumed to be the biggest all-boys school in the country but is actually the biggest all-girls school that has just gone coed. On his first day he stumbles upon a large scale battle and learns that the first rule of the school is that it "Abides the Law of Nature" which has turned the campus into a war zone-like environment. Rintaro now sees transferring out as his mission, but will it be that easy now that he's caught the eye of the 3 "Dragons", the bodacious female leaders of the three biggest factions around?

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Seto Yu is a 12-year-old boy, that is abused violently by his father. One day, he is transported into a fantasy world with video game mechanics after being killed by his abusive father and he discovers that he has the unique ability to steal other people's skills for his own use. He quickly uses his special power to take revenge on the townspeople who bully him and obtains a harem of beautiful girls who love him unconditionally even though he shows no romantic interest in any of them and has the physical build of a skinny teenager

Hachimitsu Private Academy was a revered and elite all-girls’ boarding school on the outskirts of Tokyo…once upon a time. But with the new school year comes a revision to school policy: Boys are to be admitted into the student body for the first time ever. But on his first day at Hachimitsu, Kiyoshi Fujino discovers that he’s one of only five boys enrolled at the school. Their numbers overwhelmed by the thousand girls in the student body, is it heaven or hell that awaits these five (un)fortunates?! Note: Was one of two winners of the Best General Manga award alongside Gurazeni at the 37th Kodansha Manga Award in 2013.

Yuuma is summoned back to his home island after the death of his mother and asked to become the next head of the wealthy Nuenaki family. He has certain misgivings though and rejects the offer. However after the current head dies not a day after his arrival, he has no choice but to become involved.

From FCTranslations: Azuki, a young girl whose father is the president of an entertainment corporation, is always out of luck when it comes to dating. It seems like every boy she had dated before all tried to use her as a bridge to get into the world of media. So when Azuki met the guy of her dreams, who also happened to be a contestant in the audition her father set up, she wasn't so sure what to do anymore. *Contains in the 4th volume, Juliet Club: An idol in a famous group tries to escape from his fans by studying in the library. There, he meets a girl who he mistakes as one of his fans and tries to send her away. It turns out that the girl actually doesn't know that he is an idol. They continue to study together in the library, neither of them knowing the other's name, while love slowly blooms between them... *Also another story titled We, the Demon, and Christmas Every year at the time of Christmas, the demon appears, and the Angel twins intend to catch him.

This is about a male student in an academy that teaches students to raise dragons. That particular male student's dragon finally hatches one day... and it's a beautiful girl. The adventure begins.

From MangaHelpers: Mikado Shuuji is just an ordinary guy, but he has a very unusual knife that he uses for cooking. It's actually a famous short sword that marks its owner as the head of the ninjas, and now there are hot ninja girls coming after him to take it back. Hinamori Botan is one of those hot ninja girls, but her efforts to attack Shuuji mostly end up inadvertently stripping her. After she concludes that she does not want to steal the sword and kill Shuuji, she ends up deciding to serve him as a ninja instead. Now she must protect him from the other ninja that come to claim his sword and his life.

Kei is a normal--if very pretty--young boy in high school. One day, he falls ill and is taken to the hospital. They find, much to everyone's surprise, that "he" actually has a female genotype even though "his" phenotype is male!! A little bit of surgical work solves the problem, and cool male hero Kei becomes innocent female heroine Kei. And what a female! "He" was cute before, but she is a beauty now.

Serinuma Kae is a chubby second-year high schooler and an avid fujoshi who secretly ships her classmates, Igarashi-kun and Nanashima-kun. The death of her favorite anime character causes her to become stressed and lose weight rapidly. Now that Serinuma has become an attractive girl to her classmates, her snarky kouhai Shinomiya-kun, and her senpai Mutsumi-senpai. How is she going to deal with them...with her constant BL-filled, fujoshi mind?!

Ai Shiratori is your average junior high school student with a crush on a boy, Hikaru Kamishiro. With a love so rampant and true, and an imagination as wild as any girl's Ai sometimes has rather... ecchi dreams. But none of those dreams could ever prepare her for the reality that came to her in the form of the Archangel Raphael.You see, Hikaru Kamishiro is not your average boy. Hell has plans for him and Heaven isn't about to let those plans come to fruit. While Hell sends their Hell's Apostles to get Hikaru to commit the seven deadly sins and drag him into hell, Heaven sends their secret weapon: Ai. What is Ai's mission? Nothing short of consummating her love with her beloved Hikaru... but wait by consummating you mean... sex?! Can Ai handle the Archangel's request and save her true love?

Dark Horse: Stunning, hotheaded Asuka Langley Soryu has been friends with Shinji Ikari since they were little. And she always sort of assumed they'd stay together-until the day the beautiful, brilliant Rei Ayanami showed up in class! When Shinji starts to get curious about Rei, Asuka needs to figure out if she wants to be just friends with Shinji, or something more. But why are so many people keeping an eye on these relationships-people like homeroom teacher Misato, school nurse Ritsuko, and Shinji's mother-NERV's chief scientist, Yui Ikari...? Ikusei Keikaku means something along the lines of "Raising Project", and is a series of games that are based around the concepts of Gainax's old Princess Maker games. These games allow you to more or less "raise" the character as if you were some sort of parental figure. Don't ask me for the particulars, I've never played it or seen it in action. But you can more or less mold the character into the adult you would like them to be. Previously there have been Rei and Asuka raising games, and most recently, a Shinji raising game. For some peculiar reason, they decided to release a manga to tie into the new raising game. The manga begins in a manner quite similar to the alternate universe of episode 26 of the TV series, as well as the Girlfriend of Steel 2 manga. In that aspect, this manga will seem quite "familiar" to you.

Haruhi is a poor tomboyish student at a school for the ultra-wealthy, and is able to attend because of a scholarship, but is unable to even afford a uniform. One day, she stumbles across the peculiar but very popular Ouran Host Club. She tries to leave, but accidentally breaks a vase, and is unable to pay for it. She's told that she'll have to stay and do odd jobs. That is, until they decide she would be more valuable as a club member. Not realizing she's female due to her appearance, they fix her up and give her a male uniform. She's an instant hit, so they decide to have her keep up the charade even after they find out the truth. Haruhi, being common almost to a fault, doesn't know what to make of the unconventional activities of the Host Club (or of the even more unconventional members), but having little choice, she plays along. Before long, real bonds are formed, friends made, and Haruhi finds herself accepted in a way she could never have been otherwise in this affluent school. Other manga:

Tsukina's father stole money from her as a child to use on gambling, and as well as her older brother for being cold to her. She developed an huge annoyance for men,begging her mother to let her go into an girls school.Now her father had sold their house which forces Tsukina and family to end up living with her mom's rich friend,and her FOUR SONS. The two mothers have some plans in store for Tsukina and the four sons!Let the Marriage Operation before romance commence!

Hiroyuki is a 16 year-old boy who is just starting a life of living on his own. He finds a great deal on a huge house for only 10,000 yen a month in rent. Sure the house is a little run down and perhaps even downright spooky, but it's better than nothing...until he meets Milky Way! Milky Way is a Demoness and she has her eyes set on making Hiroyuki her servant!

Yuuki Ashikaga is a high-school freshman at Sakakino Academy. While working as a student librarian, he grows enamored of Kotonoha Katsura, a girl who frequents the library. Unfortunately, Kotonoha is already dating Makoto Itou, another schoolmate. The situation is further complicated when Chie, Yuuki's older sister introduces him to Roka Kitsuregawa, her kouhai in the basketball club. Roka becomes interested in Yuuki, who only has eyes for Kotonoha. In order to make him jealous, Roka lies and claims she already has a boyfriend, her former classmate Makoto Itou. Unfortunately for all of them, Roka's lie sets off a chain of events no one could have predicted... Note: Cross Days takes place in the middle of the original School Days storyline and provides an alternate take on how things might have turned out.

Regular high school boy Kaji Rikuo’s life is suddenly interrupted by a cute girl with cat ears named Vanilla. According to Vanilla, she was created from different mixtures of animals sort of like a chimera by her master, Ibu Kiriko, whom apparently has it out for Rikuo. Confused as to why somebody would want revenge on him, Rikuo become friends with the clueless and cute Vanilla. However, Vanilla can turn into a vicious animal able to hurt Rikuo with a simple command from Kiriko…

from Chibi Manga: Want to be spoilt by boys. I entered a school full of boys!?

Story about a Yuuka Yoshimi, a young girl working in a Eroge-making studio, learning how to...make a good ecchi CG

This series has been on hold many times, and now the author has decided to stick to volumes instead of serializing. From Tokyopop: Welcome to Faeries' Landing, a place where the real world and the faerie realm collide. Sixteen-year-old Ryang doesn't realize that supernatural beings descend on his town at night, but when he stumbles on a group of faeries bathing, he ends up becoming guardian of Fanta, a grounded--and very fetching--faerie. Having an otherworldly babe hanging on you 24-7 doesn't sound so bad at first... but when Fanta’s rival curses Ryang, he is destined to encounter 108 doomed relationships...

Fujimura is a loner delinquent at his school. Feared by his classmates since the first day of high school, he's had no friends and usually ditches class. But even his standoffish nature can't hold up when a class representative with a few screws loose comes after him! And two more class representatives. They're a few cards short of a full deck too. (Actually, he's more like the tsukkomi in a world of boke.)

[From Broccoli Books]: A box that grants three wishes might seem like a dream come true. At least that's what Keita thought, but inside the box he finds a girl. And this girl is no genie - Maki's a devil princess and she's come to take Keita's soul! But she can only take his soul after he makes his third wish. So, as a sheltered demon with little knowledge of how to be evil, Maki must rely on her trusty guidebook to teach herself the ways of the nefarious arts and trick Keita into using up his wishes. Until then, Maki's going to live with Keita until he can't stand living anymore.

From Alice Dreams: Misaki Sakurako is a thirteen years old girl who loves ice cream and cherry blossoms. Living alone, she had a weird dream that told her she is the only savior to three young child boys... Strangely enough, she woke up to three handsome strangers who asked her to resolve their dear curse--their bodies will transform if they see any slightly "perverted" materials (posters, pictures, etc). The only way to prevent them from transforming would be...?