In the last chapter we met Yonji which means 4th and Reiju which means zero. This explains the title of the chapter “0 and 4”.
Yonji has a number 4 right on his cape.
Now take a look at these 2 men seen in the last chapter fighting Sora
As you can see they have a 1 and 2 on their capes. Seems like they would be the other 2 Sanji’s brothers.
*All rights go to the maker of this theory