 Through his father's hard work and connections, he landed a position as magistrate in charge of chadō matters for the head of the wealthy Kaga domain.At first he served under Lord Maeda Toshitsune, and after Toshitsune's death, Lord Maeda Tsunatoshi, who was a great patron of the arts and provided Sensō with comfortable quarters in the town of Kanazawa.He spent a great deal of his life in Kanazawa, and his first son, who succeeded him as the fifth head of the Urasenke line of the Sen family, Fukyūsai Jōsō, was born in Kanazawa.