Also known as: 一松, 松野一松
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For a type of pattern called ichimatsu-moyou, see Checkered.
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A character from Osomatsu-Kun and its spin-offs.
He is the fourth born son of the Matsuno Sextuplets, characterized by his honesty and strength second to the eldest brother. In Osomatsu-San he becomes lazy and apathetic, and has the most trouble communicating to people. He also has an affinity for Cats.
He can usually be told apart from his brothers by his Messy Hair and Jitome in Osomatsu-san. He is associated with the color purple.