Chapter 865 of "One Piece" has just recently been released, together with a number of surprisingly interesting happenings. Now, many are looking forward to chapter 866, which is expected to shed light on Big Mom's past.

The previous chapter showed how Luffy and Bege successfully enacted their assassination schemes. Then there's Big Mom who managed to trap the Vinsmoke family members, who were then saved by Sanji. Many say that it is very likely that the past life of Big Mom will finally be revealed in the upcoming chapter.

Reports have it that chapter 866 of "One Piece" will show the relationship of Big Mom with her mother, Caramel. The reason as to why she left Elbaf more than six decades ago is also said to be revealed in the upcoming chapter.

It would also be interesting to know how the Vinsmoke family will exact their revenge on Big Mom. There are also hints that Sanji is going to reject the offer to be a part of the Straw Hats once Big Mom dies. This will show the true personality and ideology of Sanji, whether he will prioritize his honor, or his family's safety.

As pointed out by Mobipicker, the ideals of Sanji would be tested as he will have the freedom to do whatever he can to ensure his family's safety. Because of this, it is possible that Sanji would finally do his best to kill Big Mom once and for all. Seeing that Big Mom and her previous life are getting a lot of attention, viewers cannot help but speculate that the character would soon be killed off in the upcoming chapter.

Chapter 866 of "One Piece" will be out on May 29. It is set to be one of the most interesting chapters as it might show the death of a very important character in the "One Piece" universe.