Fuuki Iinchou wa Ecchi na Koe no Oshigoto o Shiteimasu is a Japanese novel of 83,400 characters, with 4,234 unique words and 1,208 different kanji. Its difficulty rating on Jiten is average, 2.5 out of 5. The full vocabulary list ranks all 4,234 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.