He was in friendly relations with Shunsui TAMENAGA, a writer of light literature who was good at Ninjobon (a romantic genre of fiction) and, some say, one of the amanuenses of Eisen.
また、人情本をよくする戯作者・為永春水（ためながしゅんすい）とよしみを通じ、彼の代筆者の一人との説もある。