Secret Cartado Festival!

 is the 9th episode of the Endro~! anime.

Summary
Mei and the others receive an invitation to the Tarka Village, where creatures known as Tarkas are harvesting Cartado for a secret festival. Everyone then takes part in a Cartado hunt, where whoever harvests the rarest Cartado earns the title of Cartado King. Despite not managing to obtain a legendary rare, Mei manages to find an extra-large common card and becomes Cartado King. However, Mei is shocked to discover that the finale of the festival involves setting all the Cartado they found on fire.