The vampire guardian tradition of the Rhine family comes from the contract between the first generation patriarch and the devil. The Rhine family will rise to prosperity due to the effectiveness of the contract, but the side effect will be poor descendants = =bb; on the contrary, the Rhine family will offer the "devil's bride" as a sacrifice [too bloody U U].
After centuries of long years, the power of the contract has gradually weakened. People in the family have expressed that in order to maintain the glorious glory of the family, the "Devil's Bride" should be offered again, and the candidate for the bride is Ludwig's sister Victoria. Ludwig, unable to resist, can only watch his sister become a sacrifice.
During the ceremony, the devil was really summoned——[Okay, so much nonsense, the protagonist finally appears = =
But the result was unexpected...