
Yui's heart gets stolen by a famous demon collector from the Demon World. Her heart is replaced with a magic crystal. The magic crystal's effect will gradually wear off which would put Yui's life in danger. The vampires (Sakamaki, Mukami and Tsukinami) go to the Demon World in order to retrieve her heart, but at the same time, a parade takes place.
DIABOLIK LOVERS LUNATIC PARADE is a Japanese visual novel of 391,184 characters, with 9,259 unique words and 1,596 different kanji. Its difficulty rating on Jiten is average, 2.3 out of 5. The full vocabulary list ranks all 9,259 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.