Traveling Through the Harem with Everyone in Bed, I'll Play the Succubus!

Four roommates from the university dormitory travel together to enter the palace and fight! Jiang Xiaoyu, who was brutally killed by a hidden horse and bear, was involved in a palace fighting game. Every time her status increases, her modern bank card will have an extra amount of funds. When she becomes a queen and returns to modern times, she can get tens of billions of assets! Enjoy the prosperity of the world! In order to be resurrected and have a net worth of tens of billions, Jiang Xiaoyu joins the palace battle and awakens the succubus system! I wanted to capture the emperor's heart with her charming nature. The result... What? You said everyone has a system? ! The other three roommates also awakened the superpower system? Who can make it to the end in the palace? Tens of billions of battles, how can the friendship between dormitory sisters continue...