Custom Core Vocab Deck

Once you know many kanji and have a handle on basic grammar you require a set of vocabulary.
If your just beginning learning Japanese, creating flashcards for literally every piece of vocabulary within an anime as you go along is super slow and cumbersome.
Which is probably why there are "Core Vocabulary Decks" available which have between 1000 - 15000 words the average being 6000.
Now the most asked question by members of various Japanese learning forums and chat sites who have spent many months completing one of these decks is:
How much vocabulary is required to read manga, watch anime?

This is because after completing one of these decks they end up having to look up every other word they encounter.
Why is this and what can be done about it? These are the questions we will be exploring here with an miraculous piece of open source software I discovered.

Japanese Text Analysis Tool Vocab Deck Wordlists

Tae Kim Vocabulary Deck

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 43.33% 24.58%
Made in Abyss 50.49% 28.52%
CLANNAD 48.84% 30.81%
Hinamatsuri 44.60% 29.66%

Nayr's Genki Annihilation Complete v1

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 41.54% 27.23%
Made in Abyss 53.03% 25.37%
CLANNAD 52.85% 28.01%
Hinamatsuri 47.96% 27.28%

VN Core 1250 v3

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 42.29% 32.19%
Made in Abyss % %
CLANNAD 48.42173913% 38.07391304%
Hinamatsuri % %

Japanese Visual Novel, Anime, Manga, LN Vocab - V2K:

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 48.6356% 43.2808%
Made in Abyss % %
CLANNAD 57.48086957% 51.9%
Hinamatsuri % %

Matt's JLPT Tango Core N4 & N5 Combined:

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 53.6364% 36.244%
Made in Abyss % %
CLANNAD 63.28826087% 42.64826087%
Hinamatsuri % %

QuizMaster's Improved Core3k

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 49.6948% 38.286%
Made in Abyss % %
CLANNAD 60.38347826% 45.92434783%
Hinamatsuri % %

Anonymous Core 5000:

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 61.2684% 48.8408%
Made in Abyss % %
CLANNAD 73.50608696% 57.45565217%
Hinamatsuri % %

Nayr's Core 5000:

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 61.2684% 48.8408%
Made in Abyss % %
CLANNAD 68.27086957% 56.57391304%
Hinamatsuri % %

Core 2k/6k 2-Step Japanese Vocabulary:

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 57.882% 47.7628%
Made in Abyss % %
CLANNAD 66.86782609% 55.53913043%
Hinamatsuri % %

JapanesePod101 Vocabulary

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 71.768% 60.034%
Made in Abyss % %
CLANNAD 83.55521739% 65.92304348%
Hinamatsuri % %

Combined JLPT N1-N5 Vocabulary

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! % %
Made in Abyss % %
CLANNAD % %
Hinamatsuri % %

Core 2k/6k/10k "Further Optimized" (10k words)

アニメ 「How much of the time will you understand something」 「How much unique vocabulary was actually understood」
Toradora! 62.2088% 51.8148%
Made in Abyss % %
CLANNAD 68.86130435% 59.61434783%
Hinamatsuri % %