The Japanese the Japanese Don't Know

The Japanese the Japanese Don't Know (2010) is a comedy with 1 season, rated 7.8/10.

Haruko lands a job in a local tutoring establishment and upon showing up for work on the first day, she discovers that she will not be teaching Japanese people, but teaching people Japanese. Her students are all foreigners who live in Japan for several reasons, and she is faced with their many questions on the Japanese Language that she'd never really thought of before.