Would ReRead

A slightly unusual take on the premise with sincere love story:
"A novel finds its way into the hands of the tormented Ginger Torte. In this strange novel, which revolves around Ginger and her rival Lerajie, Lerajie is the female lead and Ginger is the villainess...?"

I reincarnated into a romance fantasy novel written 10 years ago.
On top of that, I became the villainess, Ayla, who cursed the female lead and was killed by the male lead.
I tried to change the plot but that just caused the days to repeat and a mysterious man to show up wanting my death for the days repeating

It's deeply engaging even as the darkness makes you uncomfortable:
'After a car accident, Taemin finds himself in the body of Siwon, a victim of bullying at school. No longer a pushover, he starts standing up for himself but then meets Woojin, an old friend from the past. Somehow, Woojin immediately picks up Taemin's 'scent' from Siwon. What happened between these two in the past and how will it affect their future?'