LoSaM Book 1: Birds of a Feather

Chishiya Kisana's life was turned upside down when her sister betrayed their family and village to demons. Years later, Kisana is a demon slayer and is using every waking moment to find her sister, vengeance burning in her heart. However, what she doesn't know is that due to a certain pair of siblings, the wheels of fate are now turning in an unpredictable direction. AU story.