Owarimonogatari Episode 10: Shinobu Mail, Part 4
Episode 10 of 12 of Owarimonogatari, aired December 6, 2015, 25 minutes. Available with English subtitles and dub where released.
Episode summary
The group relocates to the North Shirahebi Shrine where Izuko Gaen tells them the story behind the location and the effect Shinobu's first minion had on it.