Enomoto Kei is a security "otaku" working for a security firm, devoted to improving the securities system on a daily basis. He is not an easy person to familiarize oneself with, always collected and calm, unapproachable, a maniac in Physics, Science, Architecture and profound in other basic theoretical foundation. He is certain and proud of the fact that there is no key which he cannot unlock. One day, Kei is asked to help reveal a mystery behind a locked room murderer. While he lacks any interest in solving the mystery, he is inevitably intrigued by the term, "Closed Doors" and decides to take on the position. He works side by side with Aoto Junko and Serizawa Gou, who are lawyers working at a major law firm. Junko is pure and forward, acting upon her instincts while Serizawa is a prideful elitist who sees time as money, and therefore, will not take on any job that is unprofitable. Possessing a vast amount of knowledge and acute insightfulness, Kei is able to unlock the closed doors and unravel the secrets leading to the solution. Never before has there been a drama focused solely on closed doors.
Japanese study overview
Kagi no Kakatta Heya is a Japanese drama of 119,113 characters, with 5,599 unique words and 1,389 different kanji. Its difficulty rating on Jiten is hard, 3.6 out of 5. The full vocabulary list ranks all 5,599 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.
Subdecks
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Vocabulary highlights
Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.
- 密室locked room×195
- 言うto say×184
- 榎本Eimoto×183
- 私I×178
- 社長company president×176
- 思うto think×159
- 犯人offender×159
- 芹沢Serisawa×138
- 殺すto kill×120
- 事件event×118
- 部屋room×101
- 鍵key×101
- 鴻野Uno×73
- 久永Kyūei×69
- 古溝Komizo×63
- 野々垣Nonogaki×63
- 俺I×101
- 先生teacher×98
- 使うto use (a tool, method, etc.)×83
- 前in front (of)×81