
Aizawa Hinata is a high school counselor who provides support to students with school and family problems. This is motivated by the warped relationship she had with her over-controlling mother which she could not discuss with anyone. One day, a male student who has not been attending school confesses that he likes her. However, he dies mysteriously the next day. Hinata takes action to determine the cause of his death and learns that the boy suffered insidious bullying at school and excessive meddling by his mother. He had a record of delinquency and kept rough company. Hinata is hounded by his mother who believes that she is responsible for her son's suicide, and is driven to the verge of breaking down.
Ashita no Yakusoku is a Japanese drama of 77,007 characters, with 3,536 unique words and 1,042 different kanji. Its difficulty rating on Jiten is average, 2.9 out of 5. The full vocabulary list ranks all 3,536 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.