
Kazuki Hoshino treasures nothing more than his ordinary life, and March 2 should have been an ordinary day. The arrival of a transfer student, the mysterious Aya Otonashi, shouldn't have shattered the world he knows. He's never seen this girl before in his life, but she says she's met him thousands of times--and declares war on him for a crime he can't even remember... As the truth begins to unravel, nothing is as it seems, and at the heart of it all is a wish powerful enough to change everything...(Source: Yen Press)
Utsuro no Hako to Zero no Maria is a Japanese novel of 723,969 characters, with 13,875 unique words and 2,082 different kanji. Its difficulty rating on Jiten is average, 2.9 out of 5. The full vocabulary list ranks all 13,875 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.