He had a large circle of friends from Dutch scholars to Confusion scholars and maintained friendly relationship with a Confucian Hasan YOSHIKAWA of Oshi Domain since he traveled to study in Edo.
交友関係は蘭学者から儒学者まで幅広く、忍藩の儒者芳川波山とは江戸遊学時より親交を重ねる間柄であった。