Zombie-Loan, Shikabane Hime: Aka Recommendations
Both involve protagonists that are undead and slay other undead in order to liberate themselves from their undeath.
Zombies that hunt zombies, do I need to say what else they have in common? How about blood, gore, fight scenes and horror? Two different takes on the same theme.
Both have undead main characters who fight against other undead, though Zombie Loan has two guys instead of a girl.
They've both got characters that come back from the dead and have to kill the undead and have to kill a certain amount to accomplish their goals though Shikabane Hime Aka's is a set amount to kill. Both have some pretty cool artwork for their bad guys and cool fight scenes. They've both got some rather funny things happening in them and like damn near every other anime out there the main characters are of highschool age.