This series is titled class Rep is a boy in drag(Iincho is Otokonoko), it is basically the crazy antics between the class rep and her straight man friend, and their back and forth interactions with one another as she attempts to seduce and he attempts to deflect.

Originally in German Yanik is new at his school and doesn't want to be an outsider again. When he meets Alan he also wants to be as popular as him with the girls. But when Alan kissed Yanik to get rid of the girls, the admiration turns into disgust. But at a party where Yanik had to disguise himself as a girl Alan falls in love with the "girl" at first sight...

Yuuto Sasaki is a trap who forces his homeroom teacher Sasaki Tsukimori to spend some quality time after school, which usually entails Sasaki playing a domineering role over Tsukimori.

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...?

A girl joins all-boys singer group 'moon'

From Esthétique: The president of the huge family company DI-group is going to select his heir from among his four grandsons, that's why Ru Jin, Ru Ha, Ru Min and Ru Sung gathered together!! Of course, everyone has his own reasons to become the next president... So the survival game of this coveted seat in the executive suite is going to START!!

This story takes place during the civil war in Japan. There is a mysterious boy with a short horn on his forehead. His life turns upside down after he saves a wanted female ninja, who then tells him that she's his servant and he an emperor! Soon a few more girls appear in his life and the adventure begins. What will happen to him and what kind of weird and wonderful stories lie in front of the small group is for you to find out.

Nonomiya Yuuta, a ski Jumper aiming for Olympic gold, bursts onto the stage with his exceptional skills. However, his biggest problem is that he is not really a "HE"... The person claiming to be Nonomiya Yuuta is actually his twin sister, Nonomiya Nono... And with women's ski Jumping not being an official Olympic category, hiding her true identity is the only way for her to achieve the dreams of her father and brother and win Olympic gold.

Normal City is set in the far future where mankind exists on other planets. The existence of ESPs is accepted- but only as a "tool" for the army. The main character's name, "Kitty 101", was given to her by a scientist named Troll. Kitty 101 was biologically created by combining several strings of DNA with man-made DNA. She was also given an XY chromosome which turns her into a male on a regular basis. When she was a baby, Kitty 101 was stolen by one of Troll's scientists, Jason Haven, who wanted to save her from the experiments. He named her Mars Haven and brought her up as his own daughter because she reminded him of his lost daughter. Time passes, and Troll proceeds with his experiments on the ESPs under his disposal.

This is a story that revolves around a lesbian high school girl, Kanako Miyamae, who is scared of boys and breaks out in hives if a boy touches her. During her second year of high school, she enrolls in an all-girls school hoping to find a female romantic partner. However, her ideal candidate, Maria Shid?, turns out to be a sadistic crossdressing boy.

This is the story of a village where a deity is--on the day of the village festival, the deity endows a boy, Mao, with a destiny. That destiny is to live as a girl. In a small village where forests, lakes, fields, fish, insects, and flowers flourish, Mao, his sister, and his friend confront fate.

Another fantasy title, this story intertwines with the Greek Gods. An oracle prophesies that the current heir to the throne will be usurped, and is forced to name who will be the usurper. He lies, and sacrifices an innocent soul instead--due to his lie, this changes the life of the 15 year-old girl, Matia. It only has 15 Vols.

From Ai's Bookshelf: Akira Tsubakiya has spent her whole life being told she looks like a boy. She’s super tall, she has a flat chest, and she’s not girly at all… In middle school, she made a promise with a boy who went to her cram school, Haru— a promise that they both would aim to get into the same high school, a prestigious academy. Haru told Akira that he likes girls with long hair, and since she started to fall for him, she grew it out. Now she’s graduating from middle school, and has decided to confess her feelings to Haru. Unfortunately, she finds out that he has a girlfriend—a super-cute, girly, long-haired girlfriend! Akira runs home and chops off all her hair, deciding that there’s no point to trying to be girly. Fast forward to Akira’s first year in high school. She still wears a skirt, but she wears the top half of the guys’ uniform to school. She’s called “Prince Akira”, and all the girls are infatuated with her. Akira hasn’t seen Haru in a while, but she does bump into Haru’s “girlfriend”… who she discovers to be in fact a boy!

From Storm in Heaven: Kira Yuuki is a 15 year old boy whose only wish is to be a normal teenager. Despite what he wants, he isn't really human at all -- he's a Lemora Saramanda. There's a strange symbol on his palm, testimony to what his is. Inaba and Yukia are two of the Kira's closest friends. However, because he is a special type of his species, Kira is wanted by others for the power he can bring. The mysterious Rosen Kroitz Secret Society seems to know a great deal about the Saramanda, keeping them as pets and breeding them. One day, Kira is captured by his pursuers, and Inaba and Yukia chase after the car he's trapped in. The accident that follows changes everything for the friends, as does the appearance of Kira's older brother...

It's 217 AD, several decades after the end of the "Pax Romana," and the Roman Empire is still the most powerful empire in the world. However, between corruption in the government, increasing attacks from savage hordes, and continuing resource-draining foreign campaigns, the power of Rome is on the decline. With the recent assassination of the emperor Caracalla, many things are about to change...

From Turtle Paradise: 16-year-old Kizuna stalks the city at night, flirting with middle-aged salary men and coercing them out of their money. The thrill should be enough to satiate her, but Kizuna remains unsatisfied with her everyday life… That is, until the beautiful Inoue Yuki, also living in “Birdcage Manor” approaches Kizuna with a job proposition- to model in the nude for Yuki’s cousin, a painter and fellow resident Yusei Asai!

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.

A scientist finds a brain in an alley and implants it into the body of his beloved, Nina. It turns out the brain belonged to a boy, Misumi Yutaka, and he is none too happy to find himself in a female body. What happened to Yutaka's body and why was his brain in the middle of an alley? What will happen to "Nina" when the female parts of "her" body start to have an effect on "his" mind? You'll have to read to find out.

After his mother died, a 15-year-old boy named Taro is invited by his grandfather to the Hanaukyo mansion. Soon after he arrives, his grandfather disappears, and Taro learns that not only will he inherit the unbelievably huge estate, he will also have access to the countless beautiful young maids working there.

The story of Kuraku Asuka, a tough junior high student who gets involved with the gang scene in the Kabuki Chou Ichibangai, a rough area of Tokyo. (from Lililicious)

Ranma and Rella run a small detective agency, until one day they're bumped off after discovering adark secret! Their lives are saved by some mad scientists, but not without some side-effects...

Minori Takasaki is a lesbian who plans on having a lovely time surrounded by young girls in her new high school. However, she gets involved with a trap, Yuuki Toudou, the student council president.

A one-shot and prequel to Onee-chan ga Mamotte Ageru. In it, Nanami Kousaka goes to an idol audition, and he ultimately makes his debut cross-dressing as Mi-Na, who is seen near the end of Onee-chan ga Mamotte Ageru chapter 1 a little bit older.Sequel:> Oneechan ga Mamotte Ageru!(http://mangapark.com/search?q=oneechan-ga-mamotte-ageru)

A boy who wonders why his younger brother Yuuki started dressing like a girl, and decides to see what all the fun is about by trying on some of Yuuki's clothes.