You woke up in the body of a villainous singer.

After reading her favorite book and watching a movie, a girl unexpectedly awakens in the body of Velvet, one of the story's main villains. In the story, Velvet and her twin brother, Vespyr, were world-famous pop stars. Despite their talent and popularity, childhood insecurities led them to disbelieve in their own abilities and began kidnapping musically gifted trolls. Using a special diamond perfume bottle, the twins absorbed their musical essences, amplifying their voices. However, this gradually killed the trolls themselves.
The story's protagonist was Hunter, the son of a powerful billionaire and politician, who was one day transformed into a troll. Living among the trolls, he met Lilie, and together they experienced many adventures. When their friends were kidnapped by Velvet and Vespyre, Hunter and Lilie set out to rescue them. Their rescue was unsuccessful, and their friends, who were on the ropes of their lives, defended them. They managed to escape, expose the twins, and free the captives. Velvet and Vespyre were imprisoned, and Hunter, having briefly returned to human form, decided to become a troll again to stay with Lilie.
But now everything has changed. The new Velvet is completely different from the old one. She's cheerful, confident, and kind to others. She's also a beautiful singer and has no intention of using other people's voices for success. Knowing the future, she decides to change the fates of Velvet and Vesper, save their careers, and prevent the events that will lead them to prison. However, the more she changes the plot, the more she risks confronting the characters prematurely and completely altering the story she once knew so well.