
Falsely accused of attempting to assassinate her fiancé, the Crown Prince, Countess Leticia and her entire family were executed. She was then reborn in Japan, retaining the memories of her past ambition to become a mage-engineer, and achieved success as an engineer — but then she died in a traffic accident. And now… she's been sent back to her 12-year-old self, before the engagement!? There's no way she'll repeat the same mistakes. An engagement? Absolutely not! She'll use her skills to develop new magical artifacts to uncover the conspiracy and save her family! (Source: Hifumishobo, translated)
Yarinaoshi Koujo no Madou Kakumei: Shokei Sareta Akuyaku Reijou wa Horobiru Kadon wo Tatae Naosu is a Japanese novel of 347,170 characters, with 13,125 unique words and 2,077 different kanji. Its difficulty rating on Jiten is hard, 3.2 out of 5. The full vocabulary list ranks all 13,125 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.