"But fire and invisibility makes no sense".
Time to show you all what inspired Oda to write Sanji.
Meet "Luís Vaz de Camões". A Portuguese poet.
Here's the beginning of one of his most famous poems:
"Amor é fogo que arde sem se ver".
A rough english translation would be: "
Love is
fire that burns
without being seen".
Love>>>> Sanji wants to love all the ladies.
Fire>>>> Diable Jambe.
Without being seen>>>> Invisibility.
It's clear to me that Oda was inspired by this poem to write Sanji. A poem that tries to explain the concept of love by using opposite concepts.
Much like Sanji, originally created to be a human weapon by his father, ended up a product of the love from his mother.
Some literature lesson for you all.
You're welcome.
:cheers: