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The character 偏 (piān) evolved from ancient pictographs showing a person leaning to one side. The character consists of two components: 亻 (person radical) and 扁 (flat/side). Originally depicting physical leaning or inclination, its meaning expanded to include metaphorical senses of partiality, bias, and deviation. In classical Chinese texts, it described both physical posture and mental prejudice, representing the concept of being one-sided rather than balanced or centered. Arrived in Japan: The character 偏 arrived in Japan during the Yayoi period (300 BCE - 300 CE) or early Kofun period (300-538 CE) through cultural exchange with China, likely via Korean peninsula intermediaries. It was systematically introduced along with other Chinese characters during the 5th-6th centuries when Japanese scholars began studying Chinese texts, and was formally incorporated into the Japanese writing system during the Nara period (710-794 CE) when Japan established its first permanent capital and began compiling its earliest written records.