Immediately after the death of Soshitsu Senso, his successor and the 5th head of the school, Soshitsu JOSO, was retained by Kaga domain but soon resigned to serve the Hisamatsu clan of Iyo-Matsuyama domain.
仙叟宗室の没後すぐに5代常叟宗室が加賀藩に仕官したが、ほどなく辞して伊予松山藩久松氏に仕官する。