The Mastermind Prince and My Deadly Sin

"Reincarnated as the villainess of an adult game, she tries to escape a tragic fate alongside the most dangerous prince."

The protagonist is reincarnated as Shion, the villainess of an adult otome game. Deciding to live discreetly to avoid her tragic end, her plans go astray when a bug causes her body to go into "heat mode", in tune with the story's heroine. To prevent this mode from being activated, Shion teams up with Prince Kyle, the true mastermind behind the events, in a plan to separate the original protagonist from her suitors. "First, try to seduce me. I want to see what a villain is capable of." Without any love experience in her previous life, Shion ends up being subjected to Kyle's peculiar seduction lessons...!

Original Webtoon:
Comico, Cmoa, MechaComic

Official Translations:
B.Portuguese