Nana to Kaoru

She's quite a normal girl with a crush on a handsome boy but she has a hardon everytime she sees him. Welcome to the life of Haruka-chan, a girl with a penis. Although it's not that uncommon in this world, she is still embarrassed by the fact. There is also a group of dickgirls in the school, and they found out her secret, what will she do? From Baka-Updates: In recent years, more and more girls are experiencing the development of "tertiary sexual characteristics" during the later years of their puberty -- that is, the rapid masculinization of a certain part of their external genitalia. Ooi Haruka is one such girl, who has until now kept the changes in her body a secret from everyone but her family. However, after an embarassing incident involving the guy she's been crushing on in a crowded train, she wakes up to discover herself at school, surrounded by a group of students calling themselves the "Bra Girls (Swing Girls)." And they know her secret!?

Note: The Author and Artist list just consists of the Authors, though they double up as the artists anyway. Very Long list of authors and couldn't fit them all in the correct section. Author/Artist continued: Ruuen Rouga, Ishida Akira. An anthology of genderbending and cross-dressing. For a very detailed summary, see Manga Updates.

From Mangahelpers: Keitaro Satou is 30, successful at his job...and single. With worries about his future, he decides to have an arranged marriage to satisfy himself and his family, yet while his perspective "wife" is a beauty, problems are bound to pop up!

Sakura Uehara, who is 30, has been so devoted to work that she hasn't even dated since high school. Not able to go to university, she went straight to work, and was determined to show everyone she is just as good as those "college assholes" the company va

Summer vacation is approaching, but Nana has no time to look forward to that. Entrance exams are also coming up, and she's fretting over her worst subject. An encounter in the library provides a solution in the form of an invitation to study with Tachibana. Japanese history, that is. Meanwhile, Kaoru encounters the author who he reguards as his mentor in his favorite subject. That's definitely not Japanese history.

Plot: The woman Tsutomu encounters in college was older and smaller than he is, and for some reason, looks like the same girl in his dreams. The heart-pounding love affair between him and the "older woman" begins.

Eri Inui is a 20-year-old college student aspiring to become a mangaka. She has been following this dream ever since she was little and has been the best artist among all her friends. But she still hasn't found a publisher willing to take her under her wing. One day, however, Souta Inuzaki, the son of a distant relative, comes to live with Eri and her mother. Souta is an aspiring violinist and has come to Tokyo to practice. Eri sees a lot of herself in the young Souta. But how will she deal with a 13-year-old boy following his dreams and going through puberty?

This “Arashi” series begins 8 months in the future of YA, with Nana and Kaoru in the summer of their final year of high school. This series uses a different support cast & different location setting than the original serialization, and as such it doesn't really spoil anything from the main series. Nana to Kaoru (Prequel)

Plot: Kudou Yuusuke has to deal with the most annoying childhood friend in the world. She's Miyauchi Misao, and she wakes him up every morning, hangs all over him all the time, and generally follows him around like a loyal puppy. It's started to get a bit awkward now that they're in high school, and she's a bit more... womanly... than she was when they were children. Everyone at school just assumes they're dating, so it's killing Yuusuke's chances with the ladies. One day Yuusuke has a shock waiting for him; Misao has gotten engaged! She says that she's set to be married in spring, but she seems comfortable hanging all over Yuusuke in the meantime. The unfamiliar jealousy that the news has awoken in Yuusuke has spurred him on to making his own plans. He's going to try to become popular, and get a girlfriend, before Misao gets married in the spring!