Like his brother, Yoshihisa studied hard with a deep longing for Kodo; later he edited and published one of their teacher's literary remains "Daido Wakumon" (Studies on the Great Kodo), besides, in 1855, he wrote "Keiko Yoryaku", the summary of the volume of Jindai (the period of gods), which was his teacher's work, as well as "Jinmu Enkaku-ko" (Studies on the History of the First Emperor Jinmu).
兄同様弟も求道の念篤く学問好きで後に師の遺著『大道或問』を編集して上梓し、安政2年には自ら神代巻を大要した『稽古要略』『神武沿革考』を著している。