Strategy for the Cold-Blooded Vampire Girl, Who Was Imprisoned by a Yandere Girl

[Multiple heroines]+[Fast pace]+[Strategy system]+[Loli heroine]+[Niansen professor]+[Yandere sister] You get a strategy system at the beginning. After the first strategy mission failed, Su He owed a huge debt. Two years later, the strategy mission was refreshed, and the deceptive system automatically selected a cold female professor as the strategy target. Su He started a strategy mission, but he didn't expect that the cold female professor Bai Ye was a vampire, and the miserable little Loli was forced to become a blood bag. Soon after, my sister learned about the strategy mission, transformed into a yandere and imprisoned Su He, madly professing her love.