I Tried to Win Over a Cold Vampire Princess, but Her Yandere Sister Imprisoned Me

[Multiple Female Leads] [Fast-Paced] [Conquest System] [Loli Female Lead] [Older Professor] [Yandere Younger Sister]

From the start, Su He obtained a Conquest System. After failing her first conquest mission, she was saddled with a huge debt. Two years later, the mission refreshed, and the cheating System automatically selected a cold, aloof female professor as her target.

Su He began the conquest mission, only to discover that the cold professor, Bai Ye, was a vampire princess. The unfortunate little loli was forced to serve as her blood bag.

Not long afterward, her younger sister learned about the conquest mission, turned yandere, imprisoned Su He, and passionately professed her love.