I was reincarnated as the younger sister who stole my older sister's fiancé, so I'll live with only what I'm given and bless my older sister's marriage! After that, will I start a revolution!?

"Primrose, don't you want the same things as your older sister?" Mother asked my young self. I, reincarnated as Primrose, the wicked younger sister of the saintly Ulysenne, answered firmly. "No, I don't want it." If I desire the same things as my older sister, it will lead to my ruin. I will live only with what is given to me, and I will make sure both sisters achieve happy marriages!