Our Little Sin (Akaza x Reader)

(y/n) was taken in by Kagaya Ubuyashiki when she was 12. Both her parents died from a mudslide when she was 8, so she has been living and surviving on her own. As time goes by, Kagaya was surprised about (y/n)'s combat skills and fast reflexes, so he decided to train her to become a demon slayer. Years had passed and...