
The setting is 15th-century Europe. It was a time when heretical ideas lead those to who possessed such a mindset to being burned at the stake for their beliefs. The protagonist, Rafał, a child prodigy, is expected to major in theology, the most important subject at the time, at the university where he plans to skip a grade. One day, however, he comes across a mysterious man, and is now studying a possible "truth" in the midst of heretical thought! (Source: Shogakukan, translated)
Chi.: Chikyuu no Undou ni Tsuite is a Japanese anime of 93,690 characters, with 5,176 unique words and 1,365 different kanji. Its difficulty rating on Jiten is hard, 3.6 out of 5. The full vocabulary list ranks all 5,176 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.