ワタルが未来の自分の息子だと知った喜介は、タイムマシンに乗り、亡き妻・華代が生きていた2年前へ向かう。そこで目にしたのは、今では失われてしまった家族4人の何げない日常だった。再び華代に会えた喜びをかみしめる喜介は、当時気づくことのできなかった妻の思いを知っていく。家族の過去と未来、そしてすべての「今日」がつながる最終話。
After discovering that Wataru is his son from the future, Kisuke travels back two years to a time when his late wife, Hanayo, was still alive. There, he witnesses the ordinary everyday life of his family of four, a happiness that has since been lost. As he cherishes the chance to see Hanayo again, Kisuke begins to understand feelings his wife had kept hidden from him. The family's past and future come together as every version of today finally connects.