Soon afterwards, he decided to leave this legal career, and he joined Sumitomo in 1879 at the recommendation of his uncle Saihei HIROSE, who worked as Director General of Sumitomo.
しかし、程なくして司法官職を辞職し、住友の総理事をしていた叔父・広瀬宰平の勧めにより1879年（明治12年）に住友に入社。