However, as he failed in his family business, the studies on the calendar system, he gave away the authority of the study to Tomokage KOTOKUI of the Kamo clan in 1616.
だが、家業の暦学において失態があり、元和(日本)2年（1616年）に賀茂氏系の幸徳井友景に暦学の権限を譲る。