
The Security System that Seals the Savage Science Smartly by its Supreme Sagacity and Strength. 9S is set in an age of science, but in a too distant future. The Mad Scientist, Mineshima Yujiro, disappeared several years previous to where the story begins. The inheritance he left behind, the technology and objects he had created, were given the codename 'Legacy', and are highly sought after by government agencies and terrorists, for reasons both good, and...not so pleasant. One of these 'objects' he left behind was his daughter, imparted with a mental calculating capacity that dwarfs supercomputers, combined with her physical body, which makes for a devastating combination. (Source: Baka-Tsuki)
9S is a Japanese novel of 2,197,938 characters, with 29,286 unique words and 2,517 different kanji. Its difficulty rating on Jiten is hard, 3.5 out of 5. The full vocabulary list ranks all 29,286 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.