Kanta is a pure-hearted husband who is devoted to his wife, Natsume, who is a likeable person with no hidden agenda. They got married quickly after meeting at work, and they were an “ideal couple” in the eyes of those around them. Then one day, Natsume is involved in a traffic accident and dies. On the same day, however, she appears in their room when Kanta goes back home. One world where the wife has died, and one where the husband has died. As these two worlds progress in parallel, the two worlds intersect at certain times to restore the time they spent as a couple.