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03 — Industry

A landless ronin's son
built one of Japan's largest conglomerates.

Iwasaki Yataro stood even lower on the social ladder than the goshi — and turned Tosa's own trading arm into the foundation of Mitsubishi.

A portrait photograph of Iwasaki Yataro
Iwasaki Yataro
I

Iwasaki Yataro

1835–1885

Founder, Mitsubishi

Born into the "jige-ronin" class — families who had lost even goshi standing — he clawed his way, through talent and connections, into managing Tosa domain's own trading operations in Osaka. After the domain system was abolished, he acquired the domain's shipping assets for his own use, building what became the Mitsubishi conglomerate.

Y

Yoshida Toyo

1816–1862

Tosa domain reformer

Pushed hard for trade and industrial reform within the domain and mentored a generation of reform-minded goshi, including, indirectly, some of Ryoma's circle. Assassinated by Loyalist Party radicals in 1862, a killing that hardened Yamauchi Yodo against the party.

An overstated rivalry. It's sometimes said Ryoma and Iwasaki despised each other from childhood; the more sober reading, based on the scattered evidence that survives, is that their paths crossed only occasionally and any personal friction was modest — a detail that later fiction inflated for dramatic effect.

A staged transfer, not a windfall

A popular shorthand holds that Iwasaki simply “inherited” Tosa domain's Osaka trading house. In practice, the handover ran through several intermediate company names and years of negotiation with former domain officials before Mitsubishi's shipping business took its later shape — a process, not a single event.

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