Following the thrilling scenes that led Brook and Pedro closer to where Big Mom could possibly be keeping the Road Poneglyph, it is now speculated that Brook's skeleton may be in grave danger as the partners get closer to achieving their goal.

As fans know, Pedro and Brook are on a mission to steal the Road Poneglyph from Big Mom. Rumor has it that in "One Piece" chapter 839, Brook will be able to use his Devil's Fruit powers and will separate his soul from his skeleton.

Brook will then become invisible, allowing him to just enter Big Mom's realm without being discovered. However, rumor has it that some of Big Mom's guards will see Pedro carrying Brook's skeletal system. This could brew big trouble for the "Soul King" because if something happens to his skeletons, he might die.

Meanwhile, it is highly speculated that Shanks and his crew will save Sanji from getting married to Charlotte Pudding since Luffy is still in a fierce battle with Charlotte Cracker. If this happens, fans should expect wedding crashers in "One Piece" chapter 839.

As for "One Piece" chapter 840, it is believed that Luffy and Cracker's battle will finally come to an end, with the tenth son of Big Mom seeing defeat. Though it is very clear that Cracker is powerful and almost had an edge over Luffy in the earlier stages of the battle, Luffy's desire and determination to save his good friend from being bound to a woman he doesn't love will be stronger than any of Cracker's weapons.

If Luffy successfully defeats Cracker though, readers should expect chaos in Whole Cake Island. Jajji Vinsmoke will obviously be very unhappy about this, especially if Shanks and his crew arrive to crash the beautiful and grand wedding. Big Mom and Luffy might finally face off and a battle between father-and-son duo Jajji and Sanji may once again be ignited in "One Piece" chapter 840.

Stay tuned for more updates on "One Piece" chapters 839 and 840.