sentences:  The E257-2000 and -2500 series are refurbished versions of the E257-0 and -500 series respectively.A total of 13 9-car E257-2000 sets and 4 5-car E257-2500 sets are due to be introduced for the "Odoriko" Limited Express services on the Tōkaidō Main Line.The first E257-2000 set, converted from E257-0 set M112 at Nagano General Rolling Stock Centre, appeared in March 2019.