In this comedy story set at Sparrow's Hotel, the establishment closest to Heaven, the central character is Sayuri Satou. Notable qualities of hers are her ample bosom and her skill in assassination. As an employee of the business hotel, she deals with troublemakers by putting her distinctive abilities to use. However, when it comes to interacting with the male hotel manager, she displays a lack of competence and frequently gets herself into unintentional mishaps.