After Dressing up as a Villain, I Cultivated Demons and Went Crazy.

Chu Lingyue, who was going crazy due to depression in modern life, went through the book. In the book, Chu Lingyue failed to frame her sister, but was knocked off a cliff and fell into a demon cave, becoming a demon cultivator. Chu Lingyue practiced hard and contributed to the heroine's sister's path to becoming a god.