Momotarou: Umi no Shinpei is a war propaganda movie considered to be Japan's first feature-length animation work. It was produced with funding of 270,000 yen from the Ministry of the Navy. The movie was considered lost following the end of World War II, but its negatives were rediscovered in 1982. Shochiku's digital restoration of the film was screened at the 2016 Cannes Film Festival.