Back in 1997, there was a Japanese sushi-themed movie called Shota's Sushi, and many of the episodes of Fish Leap in Hanami parodied that show. Maybe you saw the show then.

Shunt for Shunta's Sushi

In order to take care of his family, Shunta decides to stop studying at a sushi restaurant, Phoenix Sushi, as an apprentice after his father falls ill. After a year of apprenticeship, he is still only working at the restaurant as a delivery boy and cleaning lady, but he has not yet had the chance to work at the baking table. Nevertheless, he was not discouraged and practiced nightly at home. Until one day, the girl he had a crush on at school got married, and Shunta tried his best to make a sushi for her and give her his best wishes. At the same time, Shunta's career as a sushi chef begins in earnest.