Waka poems were a popular art form in the Heian period, enough that the famous poet Fujiwara no Sadaie and Emperor Go-Toba sought to put together a selected collection of chosen verses.
The hundred waka poems that 
decorated the Ogura Sanso
Los cien poemas waka
que decoraron el Ogura Sanso
Os 100 poemas waka que
decoraram Ogura Sanso