User blog comment:Observer Supreme/Germa 66 Sanji/@comment-27973430-20170402060648/@comment-25400375-20170402124944

I'm talking about the sort of abilities that were apparently "built" into his siblings. If Reiju and Niji can use poison and electricity, then judging by their epithets, Ichiji and Yonji must have powers fire and winch-related. Don't ask me how that last one makes sense, though. I figured since his canonical fighting style uses a lot of midair techniques, something wind-related would've been appropriate.

While there have been some stories where Devil Fruits go to different users than in canon, I'm not really interested in making Sanji even more annoying to women with his perverse nature.