紀貫之
The "Kokin Wakashū" is the first of the "Nijūichidaishū", the 21 collections of Japanese poetry compiled at Imperial request. It was the most influential realization of the ideas of poetry at the time, dictating the form and format of Japanese poetry until the late nineteenth century. The primacy of poems about the seasons pioneered by the "Kokin Wakashū" continues even today in the "haiku" tradition. The Japanese preface by Ki no Tsurayuki is also the beginning of Japanese criticism as distinct from the far more prevalent Chinese poetics in the literary circles of its day. (The anthology also included a traditional Chinese preface authored by Ki no Tomonori.) The idea of including old as well as new poems was another important innovation, one which was widely adopted in later works, both in prose and verse. The poems of the "Kokin Wakashū" were ordered temporally; the love poems, for instance, depict the progression and fluctuations of a courtly love-affair. This association of one poem to the next marks this anthology as the ancestor of the "renga" and "haikai" traditions.