
Shuji is a young teacher whose confidence and honesty has made him popular with the students. He is engaged to Natsumi, also a teacher at the same high school. At the morning of the new semester, Shuji wakes up with a hangover and no memory of the night before, and a strange young woman in his bed. He feels terrible about possibility of having cheated on his fiancée, but when it turns out the girl is a student in his class Shuji is wrecked with guilt. Things go from bad to worse when the girl, Hikari, makes it clear that she's in love with him and wants to break him and Natsumi apart. Shuji's honest nature makes him want to come clean to everyone about what has happened, but before he has the chance, the secret is out. As his life starts crumbling around him, Shuji still decides to try and save Hikari from herself.
Taisetsu na Koto wa Subete Kimi ga Oshiete Kureta is a Japanese drama of 63,815 characters, with 3,100 unique words and 1,011 different kanji. Its difficulty rating on Jiten is average, 2.7 out of 5. The full vocabulary list ranks all 3,100 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.