This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Formal education in kanji, the Chinese characters Japan's writing system was built around, was largely reserved for men during the Heian period, which left women of the imperial court without the same access to the era's dominant script. Hiragana filled that gap. Developed from cursive simplifications of man'yogana, Chinese characters used purely for their sound value rather than their meaning, hiragana let court women write freely in their own language without needing years of kanji training, and it became so closely associated with them that it was known early on as onnade, literally women's hand. Rather than staying a marginal workaround, hiragana became the medium for some of the most celebrated literature in the Japanese canon, court diaries, poetry and prose written by women who had been effectively excluded from kanji-based writing but who used hiragana with tremendous skill instead. That gendered association loosened only gradually: the era's landmark hiragana works, the Kagero Diary around 974, the Pillow Book around 1002 and the Tale of Genji around 1008, were still celebrated specifically as women's achievements within a script that still read as theirs, and hiragana did not come into general use by writers of every background until later still, after the Heian period ended in 1185. Its flowing, rounded letterforms still visibly carry that origin in cursive brushwork, a visual softness distinct from the sharper, more fragmentary look of katakana, the script that developed alongside it for an entirely different purpose.