Higepiyo (literally Mustache-Peep) revolves around Higepiyo, a surreal chick that happens to have a mustache. Higepiyo can talk with Piroshi — Hiroshi, the human boy who bought him at a fair — and the two are tight friends. In fact, Higepiyo teaches Hiroshi how to win brawls in elementary school, and he sometimes fights a bully on Hiroshi's behalf. Higepiyo is actually an experimental test subject that escaped from a laboratory.

Source: Saishin Anime Jouhou

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