The anniversary events of Danmemo, although they were written by Omori, belong to another plot thread different from the canon (an alternative universe to name it), which is why Line is still alive there and Bell knows Vito although he has never seen him in canon.

As it is, there is no possibility of Vito joining the Hestia family, since in canon they don't even know who he is and besides he is still evil.

That said, even if it were possible I don't like the idea either. Bell is already a very cliche character and giving him the ability to turn his enemies into friends in the style of Goku or Naruto... It would be giving him another cliche, that is, there is no originality in that idea as for reusing it.

I have always wanted the Hestia family to improve with new more capable members, but not for it to do so through its enemies, although well, at the end of the day it is a matter of taste.

@Leinad91

I think there is nothing wrong turning an enemy into an ally or a friend. Every Japanese Anime MC are like that specially in the 80's, 90's and 2000's and I dont see it as cliche or perhaps thats the culture of eastern Asian narratives compared to western w/c is for me more selfish.

Anyway, since FF has been disbanded I'm hoping that The Aphrodite Familia will be introduce and see if Aphridite will also go crazy over Bell.

@Leinad91

Also the Aedes Vesta Arc in w/c I still not yet fully watch it.. Though I know that it is the continuation of Arrow of Orion but I still really want Aedes Vesta to be included too in the LN and Anime...

You know change it a bit...

For info Sword Oratoria 120 has just being released 12H ago.