
This is the Masked Ballroom: a place where people revert to beasts, let go of reason, and revel in freedom and anonymity. Here, with the help of a “monster supplement,” anyone can transform into beasts and do as they please. It's the only “government-approved slum,” where people can forget the suffocating atmosphere of the surveillance state. It's in this city where Reiji, a young vampire and a real monster, and his werewolf partner Tsuki take on the task of keeping the streets clean. They search for centaurs who have committed hit-and-runs and fight life-and-death battles against the urban legends that manifest. And a meeting with the “Medicine Witch” will change the fate of Reiji and his friends… (Source: Yen Press)
Kaibutsu Chuudoku is a Japanese novel of 437,390 characters, with 19,500 unique words and 2,440 different kanji. Its difficulty rating on Jiten is hard, 3.7 out of 5. The full vocabulary list ranks all 19,500 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.