
Main character's parents get killed on the Christmas night by some red shadow. Eleven years later a wave of mysterious murders occurs at the town. All the witnesses can only say that killer just disappears in the air. Main character already knows by his past memory that the murders are caused by a vampire. He takes a sword and stands on the path of revenge. Mysterious girls join him in this quest.
Tansaikigou -sec life, monochrome cube- is a Japanese visual novel of 313,846 characters, with 11,760 unique words and 2,037 different kanji. Its difficulty rating on Jiten is hard, 3.3 out of 5. The full vocabulary list ranks all 11,760 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.