
Raul could not become a Hero since the demon lord was already defeated just before his Hero exams came around. His dreams dashed, he now works at the magic shop Leon in the royal capital. One day, a young job-seeker shows up, looking for work. Now only if they weren't the child of the demon lord. (Source: Fujimi Shobo, translated)
Yuusha ni Narenakatta Ore wa Shibushibu Shuushoku wo Ketsui Shimashita. is a Japanese novel of 960,971 characters, with 20,337 unique words and 2,283 different kanji. Its difficulty rating on Jiten is hard, 3.2 out of 5. The full vocabulary list ranks all 20,337 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.