
Haga Ineko stopped being a school teacher for she was about to get married. When she is suddenly dumped by her to-be husband, she loses her way, and starts drinking. One day, an old friend approaches with a job offer. She would be a substitute teacher in a class on which several teachers gave up without an apparent reason. She reluctantly takes the job only to discover that there are several brutal bullying cases inside the class. Even she eventually starts being anonymously threatened due to her opposing posture against such cases. She now has to identify and reprimand them while at the same time protecting weaker students. The word "Hagane" on the title is a nickname which comes from Haga (her surname) and Ne (from Ineko, her name), but is actually a pun with the actual word hagane (which means steel, denoting how she must be in order to resist as a teacher). (d-addicts.com)
Hagane no Onna is a Japanese drama of 81,797 characters, with 4,181 unique words and 1,269 different kanji. Its difficulty rating on Jiten is average, 2.4 out of 5. The full vocabulary list ranks all 4,181 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.