The 20-year-old heroine discovers that she has only 10 years to live owing to an incurable condition that affects one in every ten thousand people. She resolved not to fall in love or become consumed with live. However, she ran into the hero at a local alumni organization. Based on the novel by Kosaka Ruka as well as her true experience. She passed away in 2017 at the age of 39 from an incurable condition.