[SPOILER] I think the writing for how we react in movies needs to be improved.

[Vaiolette]

nobody had a greater claim to vengeance than her when it comes to Asahi. So it was a very satisfying conclusion to the arc - and much more solid than the Warrior of Light putting him down.

Now, if your concern is that the Warrior of Light should have intervened and prevented Asahi from shooting Yotsuyu...bear in mind that the Warrior of Light was likely physically and emotionally exhausted about an intense battle.
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I understand that! However, if that were the case, and we were exhausted, the scene did NOT show it. My point is that while Yotsuyu deserves her vengeance, we should've never been written in a way to just watch someone be slaughtered like a dog a few meters from us~

I mean, we've bested much, MUCH stronger enemies before, so it is very unlikely that we'd be so exhausted to do that. Regardless, I do not disagree with you, but I hope you understand what I mean when I say showing us standing impotently like that is just bad.