Don't Try to Win Over the Yandere Male Supporting Character

System + transmigrate into a book + beautiful, tragic, powerful, and unstable love interest + redemption + falling in love over time

Su Lulu somehow transmigrates into a novel she read years ago, as the scheming, fake-sweet female side character.

System: Host, you have to stop the original male supporting character from turning evil if you want to go home. And you’ll get a huge sum of money too.

She has to stop some great villain from turning evil? Is this a joke? But for a chance to go home and a fortune, she’ll put up with it.

If the male supporting character is in trouble, she steps in. If he’s in danger, she takes the risk. Every day, she lives in terror, trying to survive by the side of the great villain.

But Gu Yiting is a highly sadistic man who kills without a second thought. There’s no way to change him.

System: Warning! The male supporting character’s corruption level is about to reach 100%!

Su Lulu decides she’s had enough and starts packing to run away.

But who could have known that the mighty, untouchable Demon Lord would go gray searching for one person, leaving rivers of blood and piles of corpses in his wake overnight?

The news spreads through every realm, and everyone wonders who the woman could be.

When the two meet again, Su Lulu is already imprisoned. With tears in her eyes, she begs him to let her go.

Gu Yiting fixes her with bloodshot eyes and says obsessively, “You’ll never escape me in this lifetime!”

P.S. This is a silly, nonsensical story. If you need airtight logic, don’t read it. My writing is limited, and I’m an inexperienced beginner.