16 years old Mikuru Mizume is a high school student, with great courage. She is always ready to defend the people in trouble. She part of the civilian police, and can be relied on it when it comes to giving a lesson to criminals. With this story, dive into an extraordinary adventure, full of love and violence

Kina found the man who slaughtered her family and can finally take revenge. Her teammates take the matter to heart. As in reality, this poignant volume will show you that life is only yours by a thread ... In the year 20XX, the police must deal with an increase in crime? Overwhelmed, they use civilian police acting under police orders. Mikuru Nazumé is an agent of the Minkei civilian police. Schoolgirl, she divides her time between school where the boys are crazy about her and the fight against crime with her faithful companion, her gun "Bren Ten". She makes it a point to capture her enemies without killing them.

Shiraishi has been taken hostage? Mikuru comes face to face with the carriers. Will she succeed in saving Shiraishi?