This is a Reskin. In order for this train to work, you’ll need to download and install first the “Tokyo Subway EMU” pack from JIRC Trainz.
This Reskin was made with permission from original author.
The Y500 series was introduced in 2004, with the opening of the Yokohama Minatomirai line, and it’s identical to Tokyu’s 5000 series.
They are operated in six 8-car sets, based and maintained at Tokyu’s Motosumiyoshi Depot on the Toyoko Line.
These actually were the first of the “5000 series family” to run on the Toyoko Line, as Tokyu’s proper 5050 series was introduced only a couple of months after.