Hamano Shozui, also known as Tarobei, was an exceptionally skilled student of Nara Toshinaga. Shozui himself had a number of apprentices and would establish the Hamano School as a pillar of Machibori. He used a number of artistic names including Otsuryuken, Miboku, Kankei, Rifuudo, Yukotei, Shuhosai, Hankeishi, and Isshunan. Records of Edo metal craftsmen hold Shozui in particularly high esteem, counting him as one of the four pillars of the Nara School. While carrying on the outstanding prowess of his teacher Toshinaga in Takabori, Sukidashibori, Shishiaibori, and Katakiribori, he also incorporated aesthetics from Joi and Yasuchika.
This motif makes reference to the Chinese tale of To, master of Shu province who turned into a cuckoo after enduring extreme sadness over the destruction of his country. The epic scene is remarkably carved and exemplifies Shozui at the final height of his career.