Doi Toshikatsu Doi Toshikatsu The adopted son of Doi Toshimasa, Toshikatsu is generally believed to be the biological son of Mizuno Nobumoto, though there are some who claim he was an illegitimate son of shōgun Tokugawa Ieyasu. He served the shogunate as advisor to shōgun Tokugawa Hidetada for many years, and played an important role in communicating and overseeing the enforcement of shogunal policy across the country; Doi also helped effect trade and diplomatic relations between Japan and the Thai Kingdom of Ayutthaya. He lost much of his influence and power upon Hidetada's death in 1632. Six years later, Doi became one
Doi (retailer) (, "Kamera no Doi"); these were known for the array of used cameras as well as competitive prices of new equipment. By the 1980s, Doi was as large a presence as Yodobashi Camera in the Nishi-Shinjuku area of west-central Tokyo. Its sales peaked in March 1989. However, it faltered in the 1990s and closed down in 2003. Doi Technical Photo seems to have survived this, even running a photography gallery in Yūrakuchō, but now (2006) appears to be defunct. Doi (retailer) Its roots go back to Doi Shōten (), also referred to as Doi Shōkai (). This was a Japanese