Cast: Amazume Ryuta

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!?

Kaoru is a 17-year old virgin who has a SM fetish. He always dreams about a SM relationship with his childhood friend Nana. One day Kaoru's mom decides to hide all his SM toys so he'll study for a change, by asking Nana to hide his toys. Nana finds the leather one-piece that Kaoru bought and tries it on but she accidentally locks it and doesn't have the key!

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 & a different location setting than the original serialization, and as such it doesn't really spoil anything from the main series.

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?

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.

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?

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 values so much. After 12 years in the same company, she has risen to department head, and as luck has it, one of those same college assholes is assigned under her. Yamada is good looking, talented, and on the fast track to success - and destined to be promoted right past her. Of course she ends up hating him.

Letting her pride get the better of her, she takes on an assignment on a tight deadline and has to work late into the night. When a blackout makes her lose her data, she's blows her cool and melts down herself, knowing that there's no way she can make the deadline now. Of course, that's when Yamada comes along, and the two of them working together manage to make it in time. When Sakura tells Yamada she owes him one, he quickly asks to be paid back by having her go out on a date with him. Soon she finds herself in a love hotel with the very asshole she hates so much, but does Yamada have the right stuff to get past her tough exterior and touch her heart?

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.

An anthology of genderbending and cross-dressing:

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