Baituo Rang Wo Chang Yikou

The knight was originally meant to rescue the princess from the evil villain, however, since the princess had already gotten married with the evil villain, the knight wouldn’t be able to ever accomplish his errand. While being in confusion, he incidentally rescued a vampire. What he didn’t expect was that the vampire would end up being such a bother! The lustrousness of the knight’s blood made it the vampire’s favorite food!
(Source: Bilibili Comics)