Board Thread:General Discussion/@comment-6192846-20150326001739/@comment-6986530-20150405012356

146.113.65.171 wrote: They don't have to resemble Rin and Len to be Rin and Len characters. Elluka Chirclatia's body has a different hairstyle and hair color from Luka but she's still a Luka character. Is she? The only indication we have now is the name, and that could very well be because of Levia taking it up later. Elluka Chirclatia has never sung a song before, for all we know now she's a Lily or even an "adult Rin" or something else.

The thing is if they don't look like Rin and Len in-universe then there's no reason to assume they're Rin and Len characters, especially since Levia has already been voiced by Luka (in Catastrophe and Chrono Story) in the first place.