Propose Marriage to the Female Villain at the Beginning

[Not a brainless and cool story + behind-the-scenes villain + slow pace + multiple female protagonists]

Qin Shu travels through a fantasy world, awakens the villain system, and prepares to propose to the female villain.

When Qin Shu discovered that the female villain's sister was actually the female protagonist and was going to marry the male protagonist in place of the female villain, he immediately had an idea that made him doubly happy!