
Two high school girls get mixed up in murder while investigating the disappearance of a classmate.
Natsu no Himitsu is a Japanese movie of 12,668 characters, with 1,416 unique words and 655 different kanji. Its difficulty rating on Jiten is average, 2.9 out of 5. The full vocabulary list ranks all 1,416 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.
This title is too short to reliably find similar media.
Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.