As the Death God DictatesKamisama no iu Toori, as The God of Death Dictates

From Dragon Voice Project: Ayumi is a 16-year-old who has a crush on her classmate, Musashi. One day, the God of Death appears before her, and announces that she has only one month left to live. There's no stopping the hourglass of fate! Life is short, girl, so love with all your might!