Transmigrated As a Female Supporting Character in the Apocalypse? I Want to Stick to the Female Lead

The rating just came out; it will gradually increase, so please don't mind.

(Dual female leads x Transmigration x 1v1 x Redemption x Slightly Yandere x Pure Sweetness x Romance)

Also known as: Transmigrated into a Post-Apocalyptic Female Supporting Character? I'm Going to Get Close to the Female Lead

A seemingly cold but actually kind-hearted beauty x A pure and innocent cutie who tries to win herself over

Shen Li transmigrated into a book.

I transmigrated into a melodramatic post-apocalyptic novel.

Good news, there's a system; you can complete tasks and still survive.

Bad news: I've been transmigrated into a short-lived, cannon fodder, vicious female supporting character.

Thankfully, she still has the female lead to win over! It must be said, the female lead is truly beautiful, kind-hearted, and possesses both a cool and a sweet side—absolutely perfect!

She'll protect the heroine! Don't let any scumbags get close! She'll kick out any one who comes along, and kick out two if they come along!

The two supported each other all the way and finally forged a path in the apocalypse!

However, the dodder-like female lead she was promised doesn't seem to be quite the same as what she imagined.

That night, Gu Yanxi said: Lili, you'll never leave me in this life, right? If you leave me...

[Congratulations, host! The female lead's favorability has reached 100%!]