Nippon Sharyo
4 x 2-car 4th-batch sets (8 vehicles) were built by Nippon Sharyo in June 2010. The sets are numbered B401 to B404 and allocated to Jinryō depot. All cars feature flip-over transverse seating. A further four 2-car sets, numbered B501 to B504, were delivered from Nippon Sharyo to Jinryō depot on 3 August 2011.