What would you do if you were told that your precious newborn child only has one year to live? Based on a true story, this drama tells the touching story of a husband and wife who live an unforgettable and invaluable 6 years and 2 months with their only son, who is diagnosed with Down's s yndrome soon after birth.

Yumi Sato and her husband Kotaro, who met at the foreign-owned band where they both worked, gave birth to a son who they named Akiyuki shortly after marriage. Akiyuki was diagnosed with Down's syndrome, and was given only one year to live. It is quite normal for people with Down's syndrome working and living a normal life in society, but Akiyuki was diagonosed with not only Down's syndrome, but also a congenital heart disease, and an abnormality in his lungs as well. Yumi and her husband raise Akiyuki very carefully, and hope that their precious son will live even one day longer than expected. Akiyuki thrives in their love, and contrary to the doctors' diagnosis, he becomes old enough to attend preschool. Through their son's short but special life, Yumi and Kotaro realize that Akiyuki has taught them so much. Just being with Akiyuki, they feel wonderful things that they never even noticed before. Most of al l, Akiyuki showed them the me aning of true happiness.

The three actors appearing in this drama are children with Down's syndrome.
It is the first time that children with Down's syndrome have appeared on Japanese television as actors.