Eight Nine Island is a non-canon island mentioned by Rice Rice. It is said that it grows Thousand-Year Trees, which is what Thousand-Year Paper is made of.
Not much is known about the island's geography other than that the Thousand-Year Trees grow there.
It is unknown if there are any inhabitants on the island.
Nothing is known about the island's history since it has yet to make an appearance.
- ↑ 1.0 1.1
One Piece Anime — Episode 132.