
Kashiwagi Natsuko, who has stayed in the US for a long time, is a new investigator of Adjust Research, an insurance investigation firm. She possesses scientific genius and vast personal wealth, but has a tendency to feel out of place in Japanese society which is overly logical. On the other hand, Tono Aki is a veteran investigator in the same company. Born in the old part of Tokyo and a former delinquent, she is rather stingy because she lived in poverty when she was growing up. However, she has superb memory and animal instincts. Natsuko and Aki make an odd combination as they confront ingenious crimes associated with insurance money and expose the truth.
Maruho no Onna: Hoken Hanzai Chousain is a Japanese drama of 92,464 characters, with 5,275 unique words and 1,435 different kanji. Its difficulty rating on Jiten is hard, 3.3 out of 5. The full vocabulary list ranks all 5,275 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.