
A little girl called Shinonome Azma is abused by her family, and that made her quite unstable, to the point were she has been driven to the limit, and now she has the rare sickness of Alice through the looking glass, that makes her see things that shouldn't be there reflected on mirrors, water, glass, etc. Everything starts when the things she sees start affecting directly the world everyone else sees, and the barrier between reality and illusion breaks apart, like a mirror falling to the ground.
Sekai Oni is a Japanese manga of 124,403 characters, with 8,645 unique words and 1,820 different kanji. Its difficulty rating on Jiten is hard, 3.4 out of 5. The full vocabulary list ranks all 8,645 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.