Don't mess with that Miao boy, he's sickly and perverted.

The new book has just started accepting subscriptions; the price will increase later.
[1v1 with both protagonists being virgins + yandere boy + cunning and obsessive + redemption]
"Based on my analysis, the villain turned evil because of love turning into hatred."
Seeing the tragic end of the righteous female supporting character in the book, who was devoured by the Gu worms and left with nothing but bones because she tried to stop the villain from planting the love Gu on the female lead, Chai Xiaomi could only sigh and shake her head.
She was stung to death by a scorpion during her journey, and then awoke in an ancient and mysterious forbidden land.
System: "This villain will manipulate the female lead, indirectly causing the male lead's death and leading to the collapse of the world!"
System: "Does the host wish to be resurrected? Your mission is to prevent the villain from planting a love potion on the female lead."
Chai Xiaomi: Damn.
The boy with heterochromia walked slowly out from the swirling swarm of bats, his silver ornaments jingling in his hair and ears, looking so handsome and harmless.
In reality, he was extremely vicious, a thoroughly monstrous and obsessive pervert.
Chai Xiaomi knew that several years later he would be the youngest Gu King in Miao territory.
However, she is a cannon fodder female supporting character who is always at risk of being killed off, and she has no choice but to act as the villain's lackey while also tripping him up.
After countless unsuccessful attempts to secretly stop him, she simply grabbed the obsessive boy and said, "Destroy him! You're really out of options: Are you absolutely determined to have this Gu poison implanted? If all else fails, implant it in me instead."
The boy gazed at her quietly, his heterochromatic eyes glistening with moisture, and gently stroked the scorpion tattoo on the back of her hand.
He laughed: "Haven't you realized yet? You've had my curse living inside you for a long time."
The scorpion gu, the most potent of the five poisons, possesses extraordinary power when nurtured with the blood of the heart.
The girl's tears, which she couldn't control, rolled into the bedding, and her voice became hoarse, unable to utter a sound.
At this point, shouldn't he be releasing worms to devour her? Why is he the one doing it himself?!
Which part of the process went wrong?