This article is about an episode of the Pokémon anime that has not been dubbed into English. As such, its coverage may contain romanized Japanese names, rather than dub names.
(Japanese: 大量発生チュウ!ピカチュウのたに!!It's a Pikachu Outbreak! The Pikachu Valley!!) is the 91st episode of the Sun & Moon series, and the 1,030th episode of the Pokémon anime. It first aired in Japan on October 7, 2018.
Spoiler warning: this article may contain major plot or ending details.
From this episode onwards, the anime moves from its Thursday 6:55 PM timeslot to a Sunday 6:00 PM slot. This marks the first time the show has changed its airing day since returning to the air following the EP038 incident over 20 years earlier.
This episode, like Pikachu's Goodbye (the first episode to air after the show switched from Tuesdays to Thursdays), also concerns a valley where a large number of Pikachu live.
The Japanese title's inclusion of "大量発生チュウ", which translates to "Infestation-chu" may be a reference to the title of the event in Japan where people in Pikachu costumes walked through the streets, "ピカチュウ大量発生チュウ", which translates to "Pikachu Infestation-chu".