What exactly is "Ultraman"?

Produced by acclaimed film director Hirokazu Kore-eda, the film features leading creators from various fields, such as film, special effects, and design from both Japan and abroad have gathered, and their respective perspective intertwine, revealing the essence of Ultraman. It also explores the unique world of Ultraman, and unravel the powerful appeal of both Ultraman and the monster designs. Furthermore, it sheds light on the ideas and work of Eiji Tsuburaya and the staff at the time, tracing how Ultraman spread throughout the world.