
Ichi is a cowardly man-until he's pushed into a mental breakdown and becomes a ruthless killer. When he gets mixed up with the sadomasochistic yakuza boss Kakihara, it triggers an orgy of blood and unmatched depravity. (Source: Seven Seas)
Koroshiya 1 is a Japanese manga of 90,454 characters, with 5,615 unique words and 1,310 different kanji. Its difficulty rating on Jiten is average, 2.6 out of 5. The full vocabulary list ranks all 5,615 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.