後こう年ねん

noun, adverb

later years; in future years; afterwards

Refers to a time in the future, often years later, or to a person's later life. Used both as a noun and adverbially.

• 後こう年ねん、彼かれはその決けつ断だんを後こう悔かいすることになる。

  In later years, he would come to regret that decision.