Aoyama Keita had feelings for Haida Monako but was too shy to express them. Tragically, Haida passed away suddenly. In his grief, Keita wrote a letter confessing his love and placed it at her funeral. To his surprise, Haida returned as a zombie and demanded that he let her stay with him. She threatened to reveal the existence of the love letter if he did not comply. Now, Keita must keep Haida hidden from society because everyone believes she is dead. Additionally, as a living dead, Haida craves flesh and does not care where it comes from, including Keita's own body.