Okay, I loved this chapter 5/5 stars.
I have to say, if it's a way for Sanji to also use his hands in a fight because they can't be damaged now, I don't know how I'd feel. But him having to deal with his heritage and all that is definitively a very interesting power-up (at least, it's not some magic sword doing most of the leg work for him, eh Zoro ?) because it opens a lot of possbilities for him : who is he, can he remain the normal Sanji with a modified body ?