We Meet Again Pinetree! But Whos This?~ (Yandere!Bill Cipher x Demon!Reader)

DISCONTINUED You were a demon. You were raised by humans. But because you were raised by humans you didnt know how to use your powers. Not completely anyway. And because of that, when you father found out about you being a demon after your (now dead) mother adopted you, he sent you off, to Gravity falls organ, and you...