I learned most of the Japanese I know from playing the Super Robot Wars series, originally for SFC, years before the games were genuinely good.
Over the years I've learned some more of the language and I've played translated SRW games, official and fan, some games I've cleared in more than one language.
What I've learned is...I know this is hard to envision, but the shit seriously isn't worth reading. Sure, Final Fantasy XV? Sure, you'll have no way to play it otherwise. But SRW is a simple strategy game with hundreds more pages of terrible dialogue added every sequel. I fell in love with the series when I was skipping through the dialogue, when there was hardly any of it. (I think the GB one has no dialogue, can't remember, been a long time). Now that I can read it I choose not too. It's terrible. Only makes the game worse.
Yuna? All that goes double for Yuna. All she says is "wow", "cool", "attack!", "that's really cool." "Yikes!" and "is her chest bigger than mine?" It's completely infantile. I'm not judging the game, I own three different Yuna games, bought them new even, I love Mika Akitaka and this game is his completely.
I'm just saying that...your imagination is probably running wild when playing this game and I support letting it run further. Make up your own dialogue. It'll be better. Maybe try to sync it up with Dark Side of the Moon.
If you don't believe me, go download some random mobile game in a language you know. Something as purile and vapid as Yuna, like a game based on deer hunting of Barbie dolls or killing arabs. Now play it. How's that dialogue? Fun? No. it's shit. Just like Yuna. Just enjoy the cool designs and the whatserface's squeeky voice. That's what it's really about in the first place.