Asuka 120% is a series of Japanese Bishojo (pretty girl game or gal game) fighting games that spanned ten releases over eight years.
The game takes place at an all girl school that educates the daughters of society's elites. Each of the school's clubs get together annually to hold the "Mega Fight". Each of the characters in any given game are members of the different clubs that are vying for dominance. Most of the games feature an all girl cast (one of the later games also features a male principal as a main character).
At the time of the debut of the series it had many features that set it apart from other games such as two level jumps (a high jump and a hop), the ability to counter from blocking, and easy to input special move commands.
The game went on to achieve great success in Japan, and even spawned a manga series.