In 905 AD, the Heian period in Japan saw the emergence of the Kokinshu, a collection of waka poems that became a refined method of emotional communication and courtship. The exchange of these poems among the aristocracy highlighted the importance of literary expression in social relationships. This cultural practice underscored the value placed on poetry and aesthetics in Heian society, influencing Japanese literature for centuries.

The Heian Period's Kokinshu poetic exchange in 905 CE established a rich tradition of dialogue in Japanese courtly romance literature. Poets like Ki no Tsurayuki contributed to this anthology, highlighting the importance of emotional expression and the aesthetic appreciation of nature in their poetry.