I haven't played Tales of Zesteria yet. So how overt is it? I do sometimes wish games would just flat out make something of it instead of 'oooh, are they a couple'?
It's never explicitly stated but I really feel like it would be generally accepted that they're a couple if it wasn't a gay couple.
That's kinda what I was angling at. That the best it can be is 'well maybe' and rampant shipping, as opposed to canon or given official status because it is a gay couple.
When I get to playing Zesteria I'd find it very interesting to see how it is represented in-game.