Emperor Nintoku
According to the preface to the "Kokin Wakashū" (905), a famous Waka poem starting with "Naniwa-zu" was traditionally attributed to Wani. At that time, the imperial throne was vacant for three years because the future Emperor Nintoku (successor to Emperor Ōjin) and his brother Crown Prince Uji no Waki Iratsuko renounced succession to the throne to crown the other. Historians and philologists are skeptical about the attribution to Wani because it cannot be found in earlier sources. From the early 10th century on, this poem was regarded as a chorus that praises Emperor Nintoku. As a result, Wani was portrayed as a sage submitting to the emperor's virtue.