Sineya

Taken against her will by three powerful mages, & chained to the floor of a cave;
Imbued with the heart, soul, & spirit of the Shadow Demon, lost her humanity
Guardians gave her the Slayer Scythe, she used it to slay the last of the Old Ones
Ostracized by her village because they feared what she had become
Died fighting demons or vampires