
The year is 1908. The 20th century is still young. An unfamiliar 20th century - in an unfamiliar world. This is a world that experienced a 19th century very different from our own. A world filled with innumerable steam-powered "Engines." The unnaturally rapid development of this steam civilization has left the world's skies shrouded in grey... and its seas dyed black. "Sea" - Once, the word suggested an expanse of blue. Today, it refers to something dark and putrid. The former harbor city of Marseille in the European Kingdom of France looks out on a sea as black as any other. But these particular waters are home to something that can't be found anywhere else on Earth... A massive artificial island, solid and imposing as a fortress. A city in its own right, but also a school; a place bursting with life and color. Its formal name: The Marseille Offshore Academia. In the spring of 1908... A single young man appears within its walls. After declaring his intent to wage war against its powerful Governing Council, he introduces himself in this way: "Nikola Tesla. 72 years old. I'm a transfer student." "Students of the Marseille Offshore Academia. My hundred thousand young friends, cursed by fate." "...I will save every last one of you with my own two hands." And at the summit of Château d'If, a bell rings out. The Bell of Gahkthun, announcing that the time of rejoicing is at hand...
Ourai no Gahkthun ~What a Shining Braves~ is a Japanese visual novel of 423,294 characters, with 12,558 unique words and 2,157 different kanji. Its difficulty rating on Jiten is hard, 3.6 out of 5. The full vocabulary list ranks all 12,558 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.