Omagari fireworks (Daisen City, Akita Prefecture).
Omagari Fireworks (Daisen City, Akita Prefecture) Overview (History, Features, and Attractions) The Omagari Fireworks (National Fireworks Competition) is one of Japan's leading fireworks displays, held annually in Daisen City (formerly Omagari Town), Akita Prefecture. Believed to have originated around 1910, the event has grown from a local festival into a national competition. It is held in Daisen City, Akita Prefecture (formerly Omagari Town), and is held annually in Daisen City, Akita Prefecture. It is said to have originated around 1910 and has grown from a local festival into a national competition.