The
is a Nanboku-chō period collection of Japanese poetry

Waka (poetry)

Waka or Yamato uta is a genre of classical Japanese verse and one of the major genres of Japanese literature...

 compiled by Munenaga

Munenaga

, an imperial prince and a poet of the Nijō poetic school of Nanboku-chō period, mostly known for his compilation of the Shin'yō Wakashū....

 Shinnō

Shinnoke

was the collective name for the four cadet branches of the Imperial Household of Japan, which were until 1947 entitled to provide a successor to the Chrysanthemum throne if the main line failed to produce an heir...

 ca. 1381. Although commissioned by Emperor Chōkei

Emperor Chokei

Emperor Chōkei was the 98th emperor of Japan, according to the traditional order of succession. He reigned from 1368 through 1383...

 (r. 1368-83) of the Southern Court, it is not included in the Nijūichidaishū

Nijuichidaishu

The are Japan's twenty one imperial collections of Japanese poetry written by noblemen. The following texts listed in chronological order constitute the Nijūichidaishū:...

, i.e., the twenty-one imperial anthologies for political reasons – the "official" anthologies had been sponsored by the rival Northern Court and the Ashikaga shoguns.

The Shin'yō Wakashū consists of twenty books, 1,420 poems in total. The poems included are mainly from the Nijō poetic school

Nijo poetic school

The refers to descendants of Fujiwara no Tameie's eldest son, Nijō Tameuji . The family name took after Nijō district of Kyoto where the family had resided. This hereditary house of Japanese waka poetry is generally known for its conservative slant toward the politics and poetics aimed at...

, but there is also a substantial amount of warrior-class poems.