Quick Transmigration: Saving the Adorable Male Side Character

[1v1, both leads are pure] [Sweet romance] [Romantic pairing]

Gu Pan died and was bound to a System for saving male supporting characters. In every life, the male supporting character is a poor little wretch with a tragic past, a sacrificial pawn who has to die for the sake of the plot and the male and female leads. She's a spoiled young lady who raises hell at every turn, yet one day she has to coax this poor little tsundere into letting her cook for him. As expected, lofty, untouchable flowers and pitiful little darlings are all just an act. Their true nature is to be scheming and dark-hearted!!!

Punishing scumbags and doting on her husband (husband? Let's just call him that for now!), without missing a single one!