
Seikai no Monshou is a Japanese novel of 364,632 characters, with 14,627 unique words and 2,301 different kanji. Its difficulty rating on Jiten is hard, 4.0 out of 5. The full vocabulary list ranks all 14,627 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.
Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.