
Decades ago, gates to an otherworldly and dangerous dimension known as Mato—the “Demon City”—appeared across Japan. Those who partook in the “peaches” growing there gained unique abilities—but only if they’re girls. When down-in-the-dumps high school boy Yuuki Wakura finds himself caught up in a gate, he’s saved by Kyouka Uzen, the beautiful commander of the 7th squad of the Demon Defense Force, who…orders him to become her slave?! (Source: Yen Press)
Mato Seihei no Slave is a Japanese manga of 219,183 characters, with 10,297 unique words and 1,900 different kanji. Its difficulty rating on Jiten is hard, 3.3 out of 5. The full vocabulary list ranks all 10,297 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.