The Keio 9000 series is an electric multiple unit train type in Japan, operated by the private railway operator Keio Corporation since 2001 on the Keio Line and its branches in Tokyo and Kanagawa Pref
The Toei Shinjuku Line is a rapid transit line in Tokyo and Chiba Prefecture, Japan, operated by the municipal Toei Subway. The line runs between Motoyawata in Ichikawa, Chiba in the east and Shinjuku