
That girl was once called "Hero." She was seen as the savior of Humanity and as the ultimate obliterator of Demons plaguing the world. Her magic was rule-breaking, her healing powers almighty, her weapon mastery unparalleled, and her will is of steel. And then, she was called "monster," and her tremendous power and abnegation was feared. Betrayed by her own comrades, she continued alone in her mission. She will not stop until all Demons are eradicated. Killing, killing, killing them all. Because that's the Hero's duty. Losing her past, gaining new companions won't alter her path. There is only one reason guiding her actions. "Because I'm a Hero."
Yuusha, Aruiwa Bakemono to Yobareta Shoujo is a Japanese novel of 429,361 characters, with 13,182 unique words and 2,169 different kanji. Its difficulty rating on Jiten is hard, 3.3 out of 5. The full vocabulary list ranks all 13,182 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.