あとのまつり

後 の 祭 り

Common word

  1. expressions (phrases, clauses, etc.), noun (common) (futsuumeishi)

    a day after the fair, (at a) stage when it's too late
    idiomatic expression

    • いまさら嘆いても、それこそ、後の祭だよ。
      You can regret it all you want, but it won't do you any good now.