「一期一会(Ichigo-Ichie)」 is a Japanese idiom, which means "Once-in-a-lifetime opportunity". 「一期(Ichigo)」means "all one's life". 「一会(Ichie)」means "only one meeting".
Once「一期一会(Ichigo-Ichie)」was used for the meaning, "You should show your sincerity towards people because meeting them is once in a life time." However, there are widely used for the meaning, "Once-in-a-lifetime opportunity".
