Princess Resurrection

Hiro Hiyorimi dies while trying to save a woman named Hime, the daughter of the King of the Monsters. As a reward, he becomes a not-quite-living soldier in Hime's honor guard, tasked with fighting supernatural enemies. These include vampires, zombies, and other creatures such as were-sharks, pandas, and killer dumplings. Hime's siblings seek to overthrow her, making her the target of their attacks.