Shinkyoku Soukai Polyphonica

Anime that suffer from a considerable drop in animation quality in at least one episode. This can vary from weird looking faces to changing animation technique, using cutouts to make up or making an episode with basically no animation.

I looked in TVtropes, CBR and AniDB for some of these.

If you know of another case, feel free to tell me!

Note
It must NOT be done on purpose, like FLCL, (most of) Shaft's anime or Masaaki Yuasa/Studio SARU anime
It will count here even if the errors were fixed in physical releases.

Anime that are NOT available to watch outside of Japan LEGALLY through streaming services.
Stack made in collaboration with ReSeinen. The criteria for addition are found in the former three parts. But a TLDR:

- Only Japanese anime.
- Anime from 2000 onwards.
- Must appear as unavailable both in TheStreamable and LiveChart.me
- Must not be a purchase-only anime.
- No kids demographic.
- It must NOT be available to stream OUTSIDE of Japan.
- Official YouTube (or similar) uploads, free streaming services (Pluto TV, Plex, Tubi) and official websites available OUTSIDE Japan count as legal streaming services, in these cases it doesn't get added to the stack.
- Must not be lost media (Example, Kick Off 2002)
- If the anime gets licensed for streaming, it gets removed from the stacks.
- Not mandatory, but the anime should be preferably done by a relevant studio.
- It is recommended that the anime has full-length episodes, that is, 20 minutes or more.


Parts 1 - 3 were made by ReSeinen
Part 1: https://myanimelist.net/stacks/29552
Part 2: https://myanimelist.net/stacks/29610
Part 3: https://myanimelist.net/stacks/35755
Part 4: https://myanimelist.net/stacks/49195

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Anime taken off the lists:

- Katanagatari (on Netflix, some regions)
- Planetes (on ITV)
- Area no Kishi (Youtube Indonesia)
- The Laws of the Universe - The Age of Elohim (Tubi TV)
- Whistle! (Anime Onegai)
- Ginyuu Mokushiroku Meine Liebe (Anime Onegai)
- Ginyuu Mokushiroku Meine Liebe Wieder (Anime Onegai)
- Masuda Kousuke Gekijou Gag Manga Biyori (Seasons 1-4) (Anime Onegai)
- Akaneiro ni Somaru Saka (Anime Onegai)

Anime that I want to go over again with a fine tooth comb and new eyes