It is no news that fans will have to wait a little longer than expected for "One Piece" Chapter 921. Thankfully, the spoilers for the next chapter of the manga reveal that Roronoa Zoro is about to enter a fierce battle.

In the "One Piece" Chapter 921, more of Kozuki Oden's history was revealed. He was the son of the former Shogun of Wano Country, Kozuki Sukiyaki and was known for his great compassion.

One day, Kozuki Oden left the Wano Country illegally and sailed with the Whitebeard Pirates. He later sailed with the Roger Pirates and went with them to Raftel. A few years later, he left Roger's crew and returned to the country, despite its strict rules on leaving and returning to its borders.

Around that time, Kozuki Oden was executed by Kaido of the Beasts and Kurozumi Orochi for refusing to divulge information about Raftel. His last words to his son, Kozuki Momonosuke, and retainers were to open Wano Country to the outside world.

Foxfire Kin'emon revealed that he, Momonosuke, Raizo, Kanjuro and Kiku traveled to the future with the help of Kozuki Toki's devil fruit called the Toki Toki no Mi. The group, then, revealed their plan to stage a coup on Kaido of the Beasts' home island of Onigashima in two weeks' time with the help of the Straw Hat Pirates, Trafalgar D. Law and the remnants of the Whitebeard Pirates.

Now, the spoilers and suggestions for "One Piece" Chapter 921 suggest that Roronoa Zoro, who got separated from the Straw Hat Pirates, will go up against the current Shogun of Wano Country and an ally of Kaido of the Beasts, Kurozumi Orochi.

Not much is known about Kurozumi Orochi, other than he uses a sword-style known as Orochi Nihenryu. He reportedly used it to defeat Kozuki Oden and his retainers 20 years ago.

In addition to that, the upcoming "One Piece" Chapter 921 will reportedly dive deeply into the backstory of Jack the Drought, the true ruler of the region of Kuri in Wano Country. In particular, it will also show how he manages to survive from his shipwreck after his failed assault on Zou.

The much-awaited "One Piece" Chapter 921 might also give fans more details about Momonosuke's younger sister, Kozuki Hiyori. Her current fate remains unknown after she decided to stay in Wano Country 20 years ago.

"One Piece" Chapter 921 is expected to be released on Oct. 22.