E231 Tokaido Line/Shonan-Shinjuku Line (Basic 4 Cars Set) E231 Tokaido Line/Shonan-Shinjuku Line (Basic 4 Cars Set) E231 Tokaido Line/Shonan-Shinjuku Line (Basic 4 Cars Set) E231 Tokaido Line/Shonan-Shinjuku Line (Basic 4 Cars Set)