Yes, you are correct! The Japanese film mentioned in the Oscars yesterday in the Best Adapted Screenplay category was "Minari".
"Minari" is a film directed by Lee Isaac Chung and it tells the story of a Korean-American family that moves from California to rural Arkansas to start a farm in the 1980s. The film explores themes of family, immigration, racism, and the American Dream.
The film's screenplay was written by Lee Isaac Chung, and it was adapted from his own experiences growing up in a Korean-American family in Arkansas. The film has received critical acclaim and was a favorite at the 2021 Oscars, where it was nominated for six awards, including Best Picture, Best Director, and Best Supporting Actor and Actress.
"Minari" stars Steven Yeun, who was nominated for Best Actor for his performance in the film, as well as Han Ye-ri, Youn Yuh-jung, Alan S. Kim, and Will Patton. Overall, it is a heartfelt and moving film that has touched the hearts of many viewers.