Dibetagurashi: Ahiru no Seikatsu - Ahiru no Sumu Shima
ぢべたぐらし あひるの生活 あひるのすむ島
Synopsis
The 40th and final episode of Dibetagurashi: Ahiru no Seikatsu. It was never aired on TV and was only available to view digitally on official Japanese streaming services when one purchased the 36-40 episode package.