Michiyoshi ran a variety of businesses which included construction of Southeast Asian country-style residences in Dejima, repair works of 'Megane-bashi' (a bridge with two semicircular arches), and built Zuikozan Eisho-ji Temple.
出島の南蛮屋敷の建設、眼鏡橋の修復、瑞光山永昌寺の建立など様々な事業を行った。