Da Tang Shuang Long Zhuan - Book 23 - Chapter 10 – Lantern Festival in Chengdu

Yang Gang accidentally became the imposter heir to a wealthy family, with a beautiful older sister and a twin younger sister at home...

Jiang Pengji got something called the Court Intrigue Stream System.
System: “Your goal is to become the most prestigious woman in the kingdom (the Queen)!”
Jiang Pengji: “Okay, System. No problem!”
Years later, she met the target by becoming the most prestigious woman (the Empress).
Jiang Pengji: “Well done, no?”

- Description from Novelupdates

For every supporting female character who never realized her dreams, fulfill their wishes.Earn Points, and fulfill your own wishes.Who says supporting characters must always be stepping stones?Supporting females need not become a protagonist, but they can quietly watch from the sidelines.