Shimotsuki Kozaburo, One Piece Wiki

For the chapter of the same name, see Chapter 1033. Shimotsuki Kozaburo was a member of the Shimotsuki Family and a swordsmith who crafted the Great Grade Blades, Wado Ichimonji and Enma. He was born in Wano Country, but illegally departed from there 55 years ago and eventually settled down in what became Shimotsuki Village in the East Blue. There, he fathered a son named Koushirou, making him the grandfather of Koushirou's daughter Kuina. The last time he was seen alive, Kozaburo was an old man

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Shimotsuki Kozaburo, One Piece Wiki

Found something interesting about Shimotsuki clan while browsing the internet. : r/OnePiece

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Shimotsuki Kozaburo, One Piece Wiki

The true identity of that mysterious character from recent chapters (spoilers up to chapter 1040) : r/OnePiece

Manga Spoilers] Zoro's family tree was a bit confusing, so I made another version : r/OnePiece