Stepmother Likes to Eat CP

When other people dress up in books, they all dress up as the male protagonist and the female protagonist, or a princess of a country with stunning looks, or a knight-errant who is carefree and unrestrained, but why does she dress as the stepmother of her own CP? But it's okay, I can assist a lot, and I can also drink sugar online. However, the plot seems to be developing in an uncontrollable direction...