This is a reskin of the E231-500 Series made by Rizky_Adiputra and avaible on his website (jirctrainz.com).

All the necessary dependencies are included in this .rar, included in the original content’s package or avaible on the DLS.

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Similarily to the E231-3000s introduced a year before, a few Chuo-Sobu Line 209-500 Series sets displaced by E231-500s were converted into 4-car sets for use on the Kawagoe and Hachiko Lines.
Re-classified as “209-3500 Series”, they entered service on the 7th of May 2018.

Currently there are five 4-car sets in service, all based at Kawagoe depot.