Ken Okuyama design the new Limited Express train for Tobu Railway. The operator has announced the design of the 500 series, planned to revenue in service by spring 2017. The design remember inside the flow of the Kinugawa and Sumida rivers (ceiling), and the moquete with “Edo Murasaki” colour. Outside the colors are “beige-champagne”, “green forest” and “future blue”. Pretends to remember the Tokyo Skytree. Kawasaki Heavy Industries will manufacture this unit.