Leaving her provincial home, teenage Mutsuko arrives in Tokyo by train to take a job in a major automotive company but finds that she is employed by a small auto repair shop owned by Norifumi Suzuki. Suzuki's hair-trigger temper is held somewhat in check by the motherly instincts of his wife, Tomoe, and his young son Ippei immediately bonds with Mutsuko as if she were his older sister. The Suzuki shop lies almost in the shadow of the Tokyo Tower as it rises steadily above the skyline during construction in 1958.
Hisashi and Mai are set to have their wedding ceremony in three months. Unfortunately, Mai falls ill and lapses into a coma. Twenty-somethings Hisashi and Mai are engaged. When suddenly Mai's heart stops and she falls into a coma all Hisashi can do is remain by her side, albeit without knowing whether she might improve. Things look up when Mai finally comes out of the coma and becomes conscious again, but she has suffered brain damage and cannot remember her man.
In a specific cafe and chair in Japan, one can travel back in time while drinking a cup of coffee. There are, however, 5 rules/restrictions. It opens for closure and changing one's future but not present.