What would you do if you could see death? Michiru Kita can see rings around other people's necks, and when those rings turn black, death follows. So when two boys from her class, Chika Akatsuki and Shito Tachibana, show up with black rings around their necks, Michiru doesn't know what to do. She tries to warn them, but they don't need it--because they are the ones death needs to hide from! With a certain loan keeping them alive, they need money to pay back the debt, and when the two zombie slayers learn of Michiru's unique ability, they decide to use her for their own profit and gain.