Witchblade: Lost Generation - Ao no Shoujo

Sickly and weak-willed, 15-year-old Miyazono Yuuri stumbles upon an ancient artifact known as the Witchblade. The weapon quickly takes control of her life and soon Yuuri finds herself succumbing to its incredible power as she seeks to protect her island home.

Note: A stand-alone novel that focuses on Yuuri, the Witchblade bearer chronologically between Takeru and Masane.