From ADV Manga:
Najica is a skilled perfumer for CRI Cosmetics, but her talents include more than creating sweet fragrances. She is actually a special operative for the secret intelligence agency behind CRI. Armed with an arsenal and an android sidekick, Najica is on a recovery assignment with no end in sight!

There exists a martial arts contest in Japan that is of no concern to boys.
Girls who possess the Dragon Queen`s spirit gather at a special academy.
The goal - fighting each other to make the soul of the Dragon Queen one once more.
How? Why?
By fondling their defeated opponent`s breasts, of course!

Atori has an unusual part-time job... she’s a demon hunter! After school, she hunts demons for a mysterious organization named N.U.E. To kill her enemies, she unsheathes the saber hidden within her hair. However, Atori is actually half-demon, but she has forgotten her past. Despite this, she's been able to overcome many difficulties as well as befriend those from both species. Unfortunately, her once calm life is beginning to quake as a terrible shadow now looms over her...