5 - Revue Starlight Movie - Sakugabooru
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OP’s comment: Too bad their SFX is ass.
4 - Demon Slayer Entertainment District Arc - Sakugabooru
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OP's comment: No one does 3D graphics better in anime than Ufotable and KyoAni to an extent. If you want to find better 3D animation, you have to go west and look for the likes of Disney/Pixar.
3 - Violet Evergarden - Sakugabooru
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2 - Akebi's Sailor Uniform - Sakugabooru
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OP's comment: Violet has the higher highs, but Akebi has better and more consistent average quality
1 - Tsurune S2 - Sakugabooru
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Honorable mentions:
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Demon Slayer Infinity Castle - Haven't seen it, but it seems to improve on the Entertainment District Arc based on the trailer
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The Fragrant Flower Blooms With Dignity - It's not in my top five simply because I haven't finished it yet. But as it stands, at its best, it would be at #3 or #2. I mean, look at this. It (and the recent Episode 12 post) inspired me to make this post. It will come down to how consistent its animation quality would be.
I used to wait till blurays dropped so when i first watched Fate/Zero i was amazed at how great it looked. It even stuttered my pc with the kraken fight.
Edit: its the same studio who did demon slayer. All their animes are beautiful.
My vote goes for fate zero too. It's the anime that made me start waiting for BD releases. Insanely well animated fight scenes