It was one of the first anime films to be dubbed into Russian and shown in Soviet cinema theaters.

The key animation of the film and the design work on the giant robot was done by the then-largely-unknown Hayao Miyazaki.

On May 28, 2022, it was announced Discotek Media will release the film on Blu-ray and will produce an English dub.

He ends up in the house of Kuroshio, the leader of the fight against the Phantom Ship and the most important person in the city.

By complete accident, Hayato finds his way to an underground passageway where he realizes that the true nature of events does not mesh with what Kuroshio has told him.