Actually, I wanted to defend about BLEACH yesterday but it'd be OOT so I dismissed it.
Anyway, I'm tired of this "Aerith vs Tifa" debate as Canon!Rosa on twitter, especially because Ever Crisis bring it back with title or something. Idgaf at all about it like.... does it matter? is it relevant to the canon pair? It's an acting whoever the actress is and even Cloud is an actor! Heck, what if I said Yuffie is the canon one?
FF7 Rebirth illustrate LOVELESS Play as VR where everybody can experience with themselves playing the leading roles. So to me, all interpretations are valid because each will see their pairings as the Alphreid and Rosa. Heck, even ZAs can see it as ZA (yes, I spot my ZA moots do that too), though I dont. Reason why I dont:
...because according to the official interpretation, Zack is not the Prisoner, Genesis is. The Play only covers Act II-III through the POV of the girl whom the Prisoner fall in love with. Zack is the Hero who save the Prisoner's life (next Act). Zack is main lead of CCFF7 (hero), doesnt mean he's also the main lead of LOVELESS (prisoner) since the story make Genesis being nerd about it. I dont think the story sound like CA or CT in parallel, either. The girl/princess is from the enemy faction who helped the prisoner.
People are focus more in the last line of the LOVELESS Play, just as Cid and Kunsel. The play itself is one of the poem's interpretation. So to me, every interpretation is valid even if I imagine Genesis playing Alphreid with Jessie as his Rosa. It just exists like any Shakespeare's play in our world. Do you feel yourself as Hamlet or Romeo? Or you feel like you're the actor/actress who play the leading roles when you take the seat in the theatre?
The only canon is Aerith singing, and yes, the song title does sound connected to the last lines shared between Alphreid and Rosa (and apparently Alphreid is played by Cloud that's why both CT and CA want their girl to be his Rosa). But I think that's why Aerith wins the competition to sing although it reflects her own feelings for everyone she meets, not because she imagined herself as Rosa with Cloud as her Alphreid.