• 【調査報告書】

  • ワノ国生まれの刀はワノ国と霜月家で見つかっている

  • ゾロが現在手にしている３本はいずれもワノ国の刀鍛冶がうった刀

• 【調査結果からの考察】

  • いっぽん松の武器屋に３代目鬼徹があったのはなぜか？
    →霜月コウ三郎の違法出国と関連がありそう

  • 世界政府非加盟のワノ国で作られた刀使いが海軍にいるのはなぜか？
    →ワノ国やワノ国含めた「ある巨大王国」の末裔のスパイ？

ONE PIECE Research Report
- Tradition of swords born in Wanokuni country

• Swords born in Wano have been found in Wano and the Shimotsuki family.

• The three swords that Zoro currently holds were all made by swordsmiths of Wanokuni.

<Possible considerations from the research report>

• Why was there a 3rd Kitetsu in the Ipponmatsu weapon shop?
    → Shimotsuki Kouzaburo illegally left Japan 55 years ago.
        I suspect it has something to do with this incident.

• Why are there multiple Swordmasters in the Navy made in Wano, which is not a member of the World Government?
  →I think that it is because the descendants of "a certain huge kingdom" including Wano and Wano are enlisted in the navy as spies.