Demon Slayer! Scorching Cherry Blossoms Scatter, Destroyer of Demons

[Transmigration] [Ghosts] [No CP] [Wuthering Waves] [No System] After deciding with her family to forgo treatment for her terminal cancer, a young girl transmigrates into the world of Demon Slayer, taking over the body of a seven-year-old girl with an incurable illness. Fortunately, her family meets the legendary doctor. After drinking his medicine, she becomes a demon, one who existed even before Muzan.