The surreal four-panel manga centers around two 14-year-old girls, the short Popuko and the tall Pipimi. The story summary on the anime's website quotes William Shakespeare's Tweflth Night play, "There is no darkness but ignorance."

[Source: Anime News Network]

Episode 13 and 14 of Poputepipikku. The special has four versions shown on four different broadcasters: Tokyo MX (Blue Dragon ver.), Nico Nico Douga (Vermilion Bird ver.), Abema TV Anilive (White Tiger ver.) and Abema TV Pop Team Epic Channel (Black Tortoise ver.). Each version has a unique combination of seiyuus.

[Source: AniDB]