Sen Genshitsu in 2007
Hansō Sōshitsu (汎叟宗室, born April 19, 1923), also known as Sen Genshitsu or Sen Sōshitsu XV (十五代目千宗室), is the 15th in a series of Japanese tea masters of the Urasenke family.
Sen Sōshitsu is the name of the head (iemoto) of the Urasenke school of the Japanese tea ceremony.
The first person in this line of the Sen family to use the name Sōshitsu was the youngest son of Sen Sōtan. He was a great-grandson of Sen Rikyū.