Zombie-Loan - S01

Do you know when you are going to die? Michiru Kita does, because she can see a "ring of death" on the necks of the people around her, and the darker the ring, the closer that person is to death. One day, she notices that two boys in her class, Chika Akatsuki and Shito Tachibana, have completely black rings. Wanting to warn them about their impending deaths, she stumbles onto their secret: they are already dead, but are kept alive through a contract with Zombie-Loan, a mysterious loan office. Of course, nothing comes for free, and the boys have to hunt down and kill zombies to pay off their debt. And once they find out about Michiru's "Shinigami Eyes," they drag her into their crazy world.