Unko-san: Tsuiteru Hito ni Shika Mienai Yousei Junjou Ha
Japanese title: うんこさん ツイてる人にしか見えない妖精 純情派
Alternative titles: Shit Naive School
Type: TV
Source: Original
Episodes: 13
Status: Finished Airing
Aired: Jan 10, 2010 to Apr 4, 2010
Broadcast: Unknown
Duration: 3 min per ep
Rating: PG - Children
Studios: Kachidoki Studio
Genres: Comedy

On a legendary island shaped like an unusually regular turd, a population of turd-people and insanely aggressive animals go about their hilarity-packed day to day lives. Central character Yoshiko Un is known as Unko-san, but you're unlikely to meet her--the island appears only to the fortunate few, to whom they give good luck.

(Source: The Anime Encyclopedia)