"One Piece" chapter 814 definitely made a shocking revelation about "Black Leg" Sanji's family of assassins; and fans are really hyped for some "One Piece chapter 815 spoilers, expecting more details about the Vinsmoke family.
Movie News Guide, in its report, said that fans are most interested about Vinsmoke family and how they have managed to alter their third son's (Sanji) wanted poster status into "Alive Only." And having done that, it must suggest that the Vinsmoke family, Sanji's kin, is powerful and influential.
One of the theory says that the Vinsmoke family had connections to the World Government and being a family of assassins, they do the dirty work for the World Government.
Another speculation says that the Vinsmoke is an extremely dangerous family that they have the ability to "severely damage" the World Government, such that their powers surpass just physical or magical powers, powers akin to Doflamingo.
Yet another theory says that the Vinsmokes got their connection to the World Government through the Cipher Pol; while others also believe that this family of assassins is being used by the Celestial Dragons or the World Nobles as their "hired or preferred muscle."
The last theory is supported by "slazer77" (via Oro Jackson) who, in his prediction, said that when Luffy didn't understand why a family of assassins can change a bounty poster, Brook reveals that the reason behind is because the Vinsmoke work closely under the Celestial Dragons, which was confirmed by Pekoms.
Pekoms added that Big Mom is pursuing the marriage so they can use the services of the Vinsmokes. And having known all of it, Luffy decides to go after Big Mom. Law tells Luffy to be careful as Kaido is watching out for them. Law then suggests to split up and he will be taking Samurai to Wano to sneak on Kaido.
The prediction discussed further that towards the end of chapter 815, Sanji will be meeting Jinbe, who will tell Sanji that he is cutting ties with Big Mom and will be leaving as soon as he sorts everything out. He then offers help Sanji to escape, which Jinbe also recognizes to be really difficult to do.
