
Hinata Kurodo is searching for his sister, who "once existed" but who disappeared, and now no one else remembers her. Kurodo receives a letter from a transfer student, a beautiful girl named Shimotsuki Shirai, saying, "If you want to know where your sister is, come to the library after school." Kurodo goes to the library, where he finds a half-naked Shirai eagerly waiting for him… (Source: Comic Vamp, translated)
Kamikakushi no Rakuen is a Japanese manga of 83,886 characters, with 4,142 unique words and 1,136 different kanji. Its difficulty rating on Jiten is easy, 1.1 out of 5. The full vocabulary list ranks all 4,142 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.