
脳研究のために、各分野の気鋭の学者が巨大施設ブレインテックに集められた。そこで脳科学者・孝岡護弘が遭遇した奇怪な現象の意味とは、そしてこのプロジェクトの真の目的とは――。
Brain Valley is a Japanese novel of 474,929 characters, with 15,098 unique words and 2,333 different kanji. Its difficulty rating on Jiten is hard, 3.4 out of 5. The full vocabulary list ranks all 15,098 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.