Considering the events in the previous chapter, fans are very excited to see what's in store in "One Piece" Chapter 813. In this chapter, media outlets hypothesize that the mind-bending truth about Sanji's family tree will be revealed.
Speculations have it that his family – Vinsmock – are actually the high-ranking clan Tenryuubito, better known as the Celestial Dragons or World Nobles. His true lineage was hinted at apparently in the "Wanted Alive Only" poster that features Sanji.
In the chapter before "One Piece" Chapter 813, it is believed that the bounty on Sanji was changed. This is only possible for someone that is part of the World Noble clan. This means that Sanji could be a member of this influential family.
It is also believed that Sanji is actually a royalty. This is suggested by his marriage with Purin from the Charlotte Family, who is allegedly seeking immunity from the World Government. In order to acquire that, at least one daughter should become related to one of the kings.
There are also rumors that while he may not be a World Noble or a royalty, Sanji still has great power in his hands being a member of a powerful mafia family. This speculation is based solely on the nature of his family name.
Reports say that Vinsmock sounds an awful lot like a mafia designation and that is expected to be unveiled in "One Piece" Chapter 813. A user from Manga Helpers suggests that the name Vinsmock actually gives it away.
The family name is allegedly derived from two words – "Vin" is the French word for "wine" and smock simply sounds like smoke, which is associated with cigarettes. Wine and cigarettes are often a thing for mafia so there could be reason to believe Sanji is a mafia.
Whatever Sanji really comes from, it is fervently hoped that "One Piece" Chapter 813 will flesh that out.
