Kakinozaki Ayana-sensei and student Kagami Yuuki move into a room in the girls dormitory for the new (co-ed) high school semester, requested by Ayana-sensei and approved by the schools' principal. As one would guess, no one can find out he's living there so other than school classes, he has to cross-dress or else he'll be kicked out of school and dorm.

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 Oblivion Lumiere:
Soujirou possesses a special predisposition that causes him to "transform into another gender when his heart throbs." Moreover, her girlfriend, Ichijou Sakura, is an elite young lady who came to acquire the same special predisposition as well. Their love life is filled with chaotically transforming between male and female; is this normal romance or girl's love or boy's love or other!? This is a love comedy featuring transformation between male and female★

Just when main character guy was about to enjoy his summer vacation, he wakes up to find his childhood friend, Anjo Hikaru, had turned into a girl! This is their story of figuring things out, all from the main character's first person perspective. With the bonus of art being done by various artists too!

Former porn star turned author Kaoru Ooshima details his autobiographical account of his daily life as a pansexual cross-dresser and what led him into working in the adult film industry. Along the way, he meets another porn star similar to him who he calls Michelle and the two start dating.

From Sapphire Sky: Saijou Kiki is a model and child star, but with the release of her new commercial, her popularity skyrockets. At school, she harbours feelings for Takumi-kun... but she somehow ends up kissing Teppei, his friend?! And what's more, they've switched bodies due to some sort of old legend?! From Chibi Manga: Everyone is talking about Saki since she acted in her first CM. She's in love with Takumi, who's in the neighbor boys high school: Sashirou High school. One day, she fell in the stairs and incidentally kissed Teppei, a student of Sashirou High School. That's a big shock! but something started to change inside them...

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 Wonderland After Hours:

Atsuko is a young high-school girl who leads a troublesome life. Working a scandalous job for the sake of survival, her reputation is in tatters and she is scorned by her peers. But one day she is noticed by one of three rich boys, Itaru, which she resembles in an uncanny way. Immediately she finds herself whisked away from her everyday life and into a new world where she is forced to take on the role as Itaru's double and replace him as the "Prince".

Princess Nina has been sent to a foreign country to marry the prince, only, she'd prefer the princess instead. Shuurei's not sure about this - especially when Nina turns out to be more than a little cruel and sadistic. Showing Nina kindness, Shuurei begins to see another side of Nina.

Noa Kagura is a cross-dresser who gets asked out by Shinobu Takada, a boyish girl on their school's karate team.

A pair of fraternal twins gripe to each other about having swapped bodies the month before.

From etc:

“Things that should not be touched by humans somehow find their way into this world. That’s why you should never, ever touch anything that is foreign.”
Follow the adventures of March, a Syste Behard, who hunts ils– evil creatures that lurk in fascinating objects.

Among the quiet villages and towns of 18th century Europe, demons known as the Ill hide within the most beautiful works of art, sparked to life by the torment of their creators. Attracted by their jewel-like allure, the unwary find themselves possessed by the Ill and driven to horrific acts of violence. Only the hunters of the Ciste Vihad can dispel the Ill.March is one such hunter, tracking the Ill from town to town to find the antiques that contain the demons before they can possess anyone. If the worst has come to pass, March's full powers are unleashed to battle the fiendish Ill. Born of tragedy, the artifacts all have their own tales to tell, as do each of their victims. But March's story may be the most tragic of all.

Jun Shiraishi has longed for years to be friends with another girl, something she tells a guy who tries to ask her out one day. Spurred on by his feelings for her, he grants her wish by cross-dressing and making friends with her as "Nai".

A guy has a childhood friend who can change sexes at will. This friend is about to turn 15, at which point they will lose this ability.

Takahashi wakes up one day to discover he's turned into a woman. Curious about what it feels like to have sex as a woman, he asks his friend Hirukawa if he wants to have sex.

To gain the confidence to confess his love to his crush, high school student Yashiro visits a secluded shrine for 100 days straight. This earns him the attention of the enshrined deity and his fox attendant Ukon who follow Yashiro on the 100th day to see how the confession turns out. However, they are surprised to see him confess to a guy, Yashiro's longtime friend Kenta, only for Kenta to turn him down. Although heartbroken, Yashiro tries to joke around with Kenta, but he accidentally gets killed when a truck runs into him.

Yashiro awakens in the presence of the shrine's god and Ukon, and as a show of gratitude, the god decides to restore him back to life to give him a second chance with Kenta. In doing so, the god grants his wish to be reborn as a high school girl and gives her the name Kagura Tendou. However, she soon discovers that the god and Ukon plan to watch over her relationship with Kenta, although she's the only one who can see and hear them.

A man has a girlfriend but he dies, and then he possesses a school girl and rushes to meet his girlfriend.

From DMP: Why is Toru Kouno receiving such an overly warm welcome at his new all boy's school? He has yet to discover the secret system called "Hime (Princess)" in effect at the school. Boys who are chosen have to dress up as a girl in every school event! Little does Kouno know that he would be the chosen one... -- Contains the story Tore x Puri (Train x Princess) in volume three.

Akira Shiraishi, a young high-school boy with feminine features, joins Blaue Rosen, the all-girl band that Mizuki Sakurazaka, an androgynous girl of the same age, performs lead electric guitar in.

Their high-school life is anything but typical: Mizuki is the "prince" of her all-girl school while Akira is the "princess" of the neighboring all-boy school. A series of comical events brings them closer together, even as the prejudice of the people around them tries to hold them back.

After the death of his grandmother and only remaining relative, Shinakawa Raizou moves in with the mysterious Mitou family as their housekeeper. He soon learns the Mitou family's secret: the Mitou can use great power with only their words. But because this power harms the body of the user, the Mitou pair up with human-like paper dolls to transfer their wounds to them through bodily fluid contact.

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Ze 2012 extra
Ze gashuu iro no hon - Artbook