8 Events Oda-sensei didn’t plan from beginning!

1- Vivi being a Princess.

2- Shanks appearing in Marineford War.

3- Portgas D. Ace being Gol D. Roger’s son.

4- Rob Lucci being villain.

5- Doflamingo and Corazon having blood relationship.

6- Shichibukai appearing in the manga. One Piece was originally supposed to be a story to fight Yonko, not Shichibukai.

7- Supernovas still surviving in New World. Oda thought about half of them would have dropped out already.

8- Trafalgar D. Water Law being an important character. Oda thought Eustass Kid would become an important character, though.

Oda has foreshadowed Blackbeard Pirates in Whole Cake

The Last Mission of the Remnants of the Roger Pirates!