However, in the last few years of his life, Sotan was working with Sosa KOSHIN and it seems that after returning to the way of tea at Senke, he set up Kankyuan as urged by his brothers.
しかし宗旦の最晩年には江岑宗左とともに行動しており、自身の還暦を前に千家の茶の世界に戻り、兄弟の勧めもあって官休庵をひらいたようである。