I like the idea of Owain and Cherri being lost twins, but I think lost friends works better. Owain was adopted by King Arthur and Soluna needed allies because of their war so it makes sense that Arthur would’ve brought Owain along to negotiations in Soluna as a knight or as his son and it makes sense that Ren would’ve brought Cherri, and by extension Apo, to Walesland as well. They’re lost friends, your honor.
I can’t draw or animate to save my life but if I could I’d make an animatic of their friendship, Cherri and Apo hearing of the death of King Arthur, them doubting it, and then meeting again in Bannerfall to Something In The Orange. And what’s sadder is that canonically, Owain never would’ve told Cherri it was him. So he knows his friend is on the other side of the war and can’t do anything about it.
I might write this as a fic lowkey