Thanks to Redon from Arlong Park Forums
From
@EtenBoby
Hiyori: Both of which are swords with honorable origin made by 2 famous craftsmen that used to be known throughout Wano country.
Kawamatsu: That’s why!! You can’t, Princess!! How can you let some random guy that we don’t know where he came from!! Use Lord Oden’s sword!!
Hiyori: I don’t know how the sword of the Sword God Ryuma, “Shusui”, got into your hands
Zoro: (Well...Moria probably stole it)
Hiyori: —but, it’s a “sacred treasure” that when stolen can lead to sorrow throughout the country.