Unko-san: Tsuiteru Hito ni Shika Mienai Yousei Junjou Ha
Shit Naive School ／ Unko-san 2 ／ Unko-san: Tsuiteru Hito ni Shika Mienai Yousei 2 ／ Unko-san: Tsuiteru Hito ni shika Mienai Yousei - Junjou-ha ／ Unko-san: Tsuiteru Hito ni shika Mienai Yōsei - Junjō-ha ／ うんこさん ツイてる人にしか見えない妖精 純情派
Description
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)