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Sora wa Akai Kawa no Hotori

Anime·天は赤い河のほとり·Red River
Sora wa Akai Kawa no Hotori
2026/07/08
Speech time
4h 1min
Word count29,539
Unique words
3,784
Unique kanji
1,134
Avg. sentence10.1
Speech speed
322
Difficulty Hard
Episodes17
Rating
62 %
Genres
Action
Adventure
Drama
Fantasy
Romance
Tags
Female Protagonist
Shoujo / Otome
Time Manipulation
Politics
Royalty
Historical
Magic
Isekai
Swords
Foreign
Travel
Desert
SourcesAnilistMyAnimeList

Japanese study overview

Sora wa Akai Kawa no Hotori is a Japanese anime of 67,107 characters, with 3,784 unique words and 1,134 different kanji. Its difficulty rating on Jiten is hard, 3.3 out of 5. The full vocabulary list ranks all 3,784 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.

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Episode 1

Speech time
13min
Word count1,445
Unique words
515
Unique kanji
278
Avg. sentence8.6
Speech speed
278
Difficulty Hard

Episode 2

Speech time
13min
Word count1,591
Unique words
530
Unique kanji
267
Avg. sentence8.3
Speech speed
287
Difficulty Average

Episode 3

Speech time
13min
Word count1,660
Unique words
607
Unique kanji
346
Avg. sentence10.4
Speech speed
323
Difficulty Hard

Episode 4

Speech time
13min
Word count1,670
Unique words
615
Unique kanji
327
Avg. sentence9.9
Speech speed
319
Difficulty Hard

Episode 5

Speech time
14min
Word count1,924
Unique words
674
Unique kanji
358
Avg. sentence10.6
Speech speed
338
Difficulty Hard

Episode 6

Speech time
12min
Word count1,340
Unique words
546
Unique kanji
279
Avg. sentence8.6
Speech speed
291
Difficulty Hard

Episode 7

Speech time
13min
Word count1,659
Unique words
606
Unique kanji
335
Avg. sentence10.0
Speech speed
325
Difficulty Hard

Episode 8

Speech time
14min
Word count1,843
Unique words
617
Unique kanji
332
Avg. sentence11.1
Speech speed
344
Difficulty Hard

Episode 9

Speech time
15min
Word count2,060
Unique words
691
Unique kanji
373
Avg. sentence10.5
Speech speed
340
Difficulty Hard

Episode 10

Speech time
13min
Word count1,648
Unique words
580
Unique kanji
310
Avg. sentence10.4
Speech speed
321
Difficulty Hard

Episode 11

Speech time
13min
Word count1,678
Unique words
595
Unique kanji
327
Avg. sentence10.2
Speech speed
330
Difficulty Hard

Episode 12

Speech time
15min
Word count2,071
Unique words
682
Unique kanji
373
Avg. sentence11.2
Speech speed
356
Difficulty Hard

Episode 13

Speech time
13min
Word count1,610
Unique words
591
Unique kanji
310
Avg. sentence9.7
Speech speed
310
Difficulty Hard

Episode 14

Speech time
14min
Word count1,691
Unique words
590
Unique kanji
305
Avg. sentence10.6
Speech speed
314
Difficulty Hard

Episode 15

Speech time
14min
Word count1,802
Unique words
642
Unique kanji
357
Avg. sentence9.7
Speech speed
326
Difficulty Hard

Episode 16

Speech time
14min
Word count1,855
Unique words
636
Unique kanji
339
Avg. sentence10.4
Speech speed
329
Difficulty Hard

Episode 17

Speech time
15min
Word count1,992
Unique words
662
Unique kanji
326
Avg. sentence10.5
Speech speed
333
Difficulty Hard

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Vocabulary highlights

Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.

See the full vocabulary list (3,784 words) →