 He gave up the lacquer business to the lacquer ware artisan Nakamura Sōtetsu.This represents the birth of the Nakamura Sōtetsu line of lacquer ware artisans who have been responsible for much of the lacquer ware of the Sen families, as well as the birth of the Mushakōjisenke (Mushakōji Sen house/family) line of the Sen family.Meanwhile, Sōtan had his third son, Kōshin Sōsa, become heir to the Sen house, which eventually came to be referred to as the Omotesenke (front Sen house/family), while he set up his retirement quarters on adjacent property.