Female Protagonist is a Blackened Villainess

Crossing into the world of the male harem protagonist, Long Aotian, really isn’t a good thing.

I kindly seized a blackening cute lolita from that man’s dastardly clutches. I thought that if I protected her, the girl would not blacken into a villain. But instead, the girl had formed a more terrible characteristic than blackening…

After nine years of traveling with her parents, Long Shiyan’s family encountered a group of bandits. Although her parents died, Long Shiyan was able to escape from them with the help of a system. From it, she learned that she was stuck inside the world of a harem novel! In order to revive her parents, Long Shiyan must prevent the protagonist of the original novel, Long Aotian, from capturing wives and attaining a harem. Otherwise, the world would end!

But, after saving a future harem member from Long Aotian’s clutches, why did this girl obtain a more terrifying characteristic than blackening into a villainess…