The series begin with the meeting of the main protagonist.  Kirika and Mireille finds one another and begin their quest for the truth.

A series of atrocious terrorism committed against GIGN.  Someone within is selling out information, could hired Noir succeed?

Assigned to take out an unsavory CEO in a hotel, Noir finds themselves trapped within as the hunters became the hunted.

Noir must take out key personnel of a company specializing in "coup d'etat" of weak governments.  But Kirika finds out that the bad guys are still human -- could she pull the trigger knowing this?

Key to Kirika's past, Les Soldats.  Just as information seems to be close at hand, Mireille's informant is killed.  On investigation, they come face to face with an important member of the group.  The past is catching up to Noir.

A dying man who had committed crimes against humanity is trying to redeem himself.  A white cat that makes Kirika smiles.  The two delved their way into her heart.  A test of Kirika's barrier against sadness.

A badly hurt Kirika is slowing down Mireille during a mission of assassination.  With revolutionaries after them, Mireille contemplates killing Kirika and being on her own after trouble stacks up one after another. 

Intoccabile - the untouchable, one that can't be interfered.  The intoccabile have no fear and Mireille knows this all too well.  Would Mireille be able to face her fear against the fearless ?

She knows no fear.  The beautiful Intoccabile who have seen the face of Noir and lived.  Will Noir be able to defeat the untouchable ?

A man from Soldats contacts Mireille and Kirika concerning information about the society.  Things get interesting when the seemingly whimsical Chloe involves herself in the situation.

After completing her assignment with Kirika, Altena has another one for Chloe that involves an old general who have served Soldats well.  In the process, Chloe learns about the general and takes matter of revenge into her own hands.