Coil bosses and spoilers

I am taking a break from Primals, so I thought I would start working on beating Turn 1. Since the only time I tried it out of curiousity I was gently reminded to take my fingers out of my ass, I thought I'd watch a guide first. I mostly care about the storyline/lore (and gear for glamour), so are there any bosses relevant to the story or is it safe to watch a guide? I am not looking beyond T1 for now but it applies to all turns.

Thanks

To play safe and avoid spoilers, might want to only watch the fights not the cutscenes and intros as they give away a lot.
Fight wise nothing spoilers busting till turn 5 and even then that's more make sure you turn off when boss dies don't leave it running

Turn 9 is the only boss that could be considered a spoiler, but there are currently no guides for it anyways.

Thanks guys! I'll start working on it then :)