After Provoking the Ominous Crown Prince, I Used Mysticism to Slaughter My Way to the Top

After my ex-boyfriend's whole family offered me up as a sacrifice, I was drenched in blood and awakened the bloodline of a celestial master. Along the way, I saved a sinister young heir who was on the verge of death. He said he wanted to marry me, but I thought he was talking nonsense. That is, until he cornered me against a wall and rasped, "Wife, the whole family is waiting for you to come home and pay respects to our ancestors."