Shōan's son Sen Sōtan soon succeeded as the family heir and head of this estate.
Eventually, Sōtan's youngest son, Sensō Sōshitsu, inherited that part of the estate, which came to be known as the home of the Urasenke.
The Fushin-an estate, where the 3rd generation, Sōtan, lived until retirement, is the home and headquarters of Omotesenke.
Licenses or permissions are called kyojō (許状), menjō (免状) or sōden (相伝).
-Kōshi (講師 teaching permission) The first skills a student in any Tea school learns are the warigeiko, literally divided or separate training.