Yandere Blood Princess, Let Me Go! The Elf Miss Surrenders

The elf "Alisa" was forced to drink a transformation potion. If she doesn't regularly expel the tainted blood from her body, she'll turn into a succubus!

But she "luckily" met a kind-hearted white-haired Blood Princess.

"So you mean you can help me by sucking my blood?"

"Mm-hmm!"

"And you won't charge me anything?"

"Mm-hmm!"

"And it won't hurt at all?"

"Mm-hmm!"

"All right, go ahead and suck!"

"Hey, wait! If you're sucking blood, why are you taking off my socks?!"