Rita Kaniska from the second arc of King Ohger.
Recommended prompt: kingritaskip, short black hair, hair over one eye, facemask, high collar, black and purple outfit, black pants, black gloves, black boots. Omit facemask and high collar if you want her unmasked.
Update: Trained a new version using Illustrious as a base to test it out, keyword for this version is "ritakaniska"