Rickie's manga / #villainess(2)

Male lead was cursed. In original novel he was saved by heroin. He falls in love with the girl who used to be a villainess and she is able to break his curse. Now he's trying to break down her walls and get into her heart.

Video game setting. Player becomes the villainess who is an Omega. Main character is her fated mate, but if they end up together it means game over.