Houdzuki Maika is a high school girl who, in a sense, is never alone. Her twin brother Maito, who could not survive birth, lives inside of her and shares her body. They switch between who gets to live each day and they share most of their memories. However, the only times they get to see and talk to each other is when they are both asleep, where they share the same dream. Perhaps as a result of this supernatural existence, they have the ability to see ghosts. These twins will surely face many mysterious events ahead!

When twins are born to the Oda household, Karin is tossed aside as an unwanted child. The one person who gave her strength through her childhood was her brother, Oda Nobunaga. Now both adults, Nobunaga sets about his plan for world domination in order to unify the world and create a place of happiness for both his subjects and his sister. However, tragedy strikes as Nobunaga is attacked in his palace and murdered. Beside his death bed, Karin vows to take on her brother's dream and act as his substitute, even if it requires making a deal with a demon to do so...

From TZA: One afternoon, while Makoto is at a library reading a picture book with his younger sister, he is transported into the picture book. When he wakes up, he finds himself inside the world of Alice in Wonderland and that he has become Alice! In order to return home, Makoto learns that he has to defeat the King of Hearts, and so begins a journey to the King of Hearts’ castle.

From Houkago Scanlations: Shiki threw everything away for the sake of revenge. But at the new school where she disguises herself as a male, she meets 4 popular rich guys... Haru (spring) the prince, Natsu (summer) the bishounen, Aki (autumn) the womanizer, and Fuyu (winter) the cold-hearted genius. What awaits Shiki? And will she get her revenge...?

Ishikawa Ginji hates anything related to ghosts, superstition and the occult with a passion. His "occult phobia" is so intense that he does not hesitate to reject any girl who appears to have even the slightest interest in the subject. One day, after a particularly intense reaction to a haunted house lands him with a 600,000 yen debt, he is suddenly kissed by an elementary school student named Ageha, who then explains that she will use him to "wipe out every ghost in the world". While the sex appeal of the kiss is not enough to turn Ginji to her side, the fact that she "bought" him by paying off his debt in one go seems to work just fine.

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.

A series where Hinata Taiyou, a stalker, follows around Kinoshita Hazuki...and protects her (and the earth) from aliens. I mean the title says it all, really.

In order to be bought by a rich family, Narumi Inoue, hiding the truth that he is a man, goes to a girls' school. As a trainee, Narumi was sent to serve a girl from a rich family who hates maids (only weekends)! Keeping the 'heart of treating/serving people,' Japanese maid, Maid in Japan, Narumi's battle will start…!? If it is found out that Narumi is a man, he will be castrated. Don't miss the cross-dresser maid boy's love and sufferings while serving!

From Kodanclub: An ordinary, quiet town is shaken by a series of bizarre happenings brought about by the darkness in human hearts. There are no solutions in the real world: Only "Dream Messengers" can find the answers. Dream messengers connect the fabulous with the real and control the power of dreams. Their leader, Toko Mishima, works with 8 other messengers using the powers given by an old spell and a toy made by Toko's father. Toko, her younger sister Rinko, Hajime Tachibana, who loves young girls, and the six other Dream Messengers are given the names of days or stars - Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Raff and Keito.

Centuries ago in an epic battle, King Phelios defeated the Vampire-King Duzell. Using a powerful spell Phelios destroyed Duzell but he perished as a sacrifice for using such a strong spell. As both laid dying, Duzell swore that he would be reincarnated to find Phelios' reincarnation and when he did he would drain Phelios' blood, rip his body limb from limb and laugh while his soul writhes, damned for eternity to a lake of fire. A century later, Duzell is reborn as a wildcat called a kyawl. Unfortunately, he can't find the reincarnation of the now Saint Phelios. Luckily, he is adopted by his nemesis' great-granddaughter, the 15-year-old princess Ishtar, through whom Duzell may be able to find the reincarnation of Phelios. The fate of the ages is reborn, and the vampire game begins.

This volume is a collection of extremely hot PWPs. There's the patient who molests his 'nurse'... the doctor who's messing around with his assistant... an upperclassmen gives a younger boy a very intimate lesson... and last but not least, the boy who replaces his sister as her fiance's bride. And oh, wow, is that one steamy! Red hot smut. Chapter 6 released as a oneshot under the title Youkubari wa Damerano. • Arai accepts two sempais' offers to go out and suffers the consequences when they find out they are being 'lead on'... - Bliss

From MangaHelpers: Muto Yuzuki was ready for a whole new life and a different self when she got to middle school but she didn't expect it to be literally torturous. Yuzuki is “persuaded” by an upper classman named Funaki Aoi to join the Torture Club on campus which has been secretly training students to enter the field of military and police organizations as interrogation experts. Aoi sees something inside Yuzuki and thinks she might be a prodigy in torture methods. Naturally, Yuzuki wants nothing to do with such vulgar conduct but the more she spends time with the club, the more she starts to realize her own dark potential. [vyc]

Masato Kataoka moves into his new dorm to begin his life in high school when one day, a cute girl named Yuki Nomura becomes his roomate. Masato learns that Yuki is an old childhood friend, but becomes surprised when he realizes that Yuki was, and still is a guy. Yuki's charm and affection for cross-dressing leaves Masato with feelings of discomfort and fright. Find out how Masato manages to deal with a cute cross-dresser and the many obstacles of high school life. Résumé by: Krasae

A boy wants to confess his love to his senpai, but his plans are ruined when he turns into a girl. The twist is when she finds out that he's a girl, and she tells him she used to be a boy too, and promises to show him the ropes of girlhood.

This series follows the adventures of two main characters as one of the characters goes through a series of episodes in discovering his female identity as a trap. This is a series in which each adventure is a self encapsulated oneshot not dependent on previous oneshots for a coherent understanding of a story to occur.

This is a wonderful tale set in historical times that deals with amazing legends... A strong and active young boy named Duo Xi and a gentle young girl named Xiao Que live in a village at the base of a mountain which, legend has it, is home to female fox demons. Among the foxes is the very special Cai Sheng--a little girl fox with the power to one day become what only the most powerful foxes can become: a man, able to sire celestial fox children. Lonely, with no one her age to play with, the child fox Cai Sheng descends to the village and plays with Duo Xi and Xiao Que, and when the little fox child is attacked by a dog, it's the two human children who save her! Now the humans are marked, and will remain so--even in their lives to come--until Cai Sheng repays her debt to them... Two hundred years later, Cai Sheng is more powerful and has mastered the art of becoming a man...and she still owes a debt to the reincarnated children! -- ShoujoMagic (Clarifying note: Very low ecchi content)

Eruna was entrusted with ruling a country at a very young age when her father, the king of a small kingdom, fell very ill. With such a heavy burden placed upon a mere teenager, the king gave Eruna an important piece of advice about how he made his time of rule a success: find your shadow. By finding her double, she will find the will to live and be brave even in the most dire situations. Eruna does find a person who looks identical to her but it turns out fate loves to play games. Teshio used to be a simple rancher who had a problem of always being mistaken for a girl but he is about to go from rags to riches because he becomes the new shadow for princess Eruna.

Merleawe has left her hometown and moved to the capital city of Viegald to attend wizarding school. On her way to her first day of school, she bumps into a man who kidnaps her and takes her to the castle, where she is charged with an awesome task”impersonating the kingdom's master wizard! Fearing war would break out if it was known the master wizard, Sylthfarn, was missing, Sylthfarn's inner circle has decided someone must pretend to be him. Merleawe tells them that she will take the job! But not only does she lack the ability to cast more than simple magic, she also has no idea who the master wizard was! Unraveling the twisted threads of Sylthfarn's disappearance and keeping up the appearances of both master wizard and first year wizarding student makes Merleawe's every day challenging, magical, and amazing!

The life of daimyo Uesugi Kenshin commanded authority and fear during the Sengoku period of Japanese history. In this retelling, the powerful lord is reimagined as a woman.

Living in regret that his formula gave birth to the atomic bomb, Professor Einstein sends two boys whose eyes can see the future on a train that travels at the speed of light before embarking on his own final adventure: death. His hope is that they will find "HER" and tell her his wish, for it is only she who can grant it. Fifty years later, it is 2005 and the place is Tokyo. At last, "SHE" (Ruika) has been found... but Ruika has an unusual circumstance. For her mother's sake, she's been living as her dead brother since childhood. Does Ruika truly have the power to grant wishes? If she grants her mother's wish by becoming a boy, then no one can lead us into the GLOBAL GARDEN... Now it's a race against time and against each other, because everyone has a dark past and an ulterior motive for possessing the girl who can grant Einstein's wish.

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.

Sequel to Mai Otome.

From Wikipedia: Hanabuki High School prohibits its pupils from wearing makeup. Among the school girls there is a rumour going around about a legendary make-up artist, Ageha, who secretly gives makeovers to girls after school. Any girl wanting Ageha to give them a makeover needs only to write their name and class on Ageha's card (showing Ageha's trademark, a swallowtail butterfly—agehach? in Japanese) and put it up on the school's notice board, and Ageha will later show up in their classroom. However, no one knows that Ageha's true identity is the quiet, bespectacled girl, Rin Fujiwara, except for the play boy, Riku Kisaragi. Amused by the idea, Kisaragi cross-dresses as Ageha's assistant to tag along with her as she works. A running gag in the story is that Ageha's clients think that Kisaragi is Ageha upon first meeting.

From ShoujoMagic: Hatori is a tall girl who's easily mistaken for a boy, and she's in love with her childhood friend, Keishi. Even though he's a boy, Keishi is so cute that Hatori just wants to push him down and make him her own. Hatori has countless delusions and hallucinations (unbefitting a young lady) running wildly through her head every day -- and they're all about Keishi. They set her heart pounding and her nose bleeding!