Honestly, given Elio's body type, at best (and this is me being generous here), Alexandros from The God of Highschool. He would be a mirror image because of how simplistic that character's outfit is. ...Well, minus the tattoos, of course. Tatts are a big turn-off for Elio, ironically.

I would say Alexandros' son, Jose Natasha Violeta, or Yu Narukami from Persona 4, but that's just a cop-out, given Elio uses both of them as a character foundation.