After the first Ultraman and Susumu Hayata merged in 1966, they were supposed to fight ordinary earth monsters according to the original TV plot. But the moment the rift opened, the first batch of "hybrid monsters" carrying the pioneer evolutionary genes landed. These monsters are naturally attracted to Spaceium-like light energy. When the first-generation Ultraman's light hits them, most of the energy will be absorbed by the carapace and converted into the monster's physical strength.
In the past three years, the first generation endured 17 high-intensity battles, and the energy core continued to be overdrawn. Finally, when fighting a level four monster, the timer was completely extinguished. Susumu Hayata lost relevant memories and returned to human society to live anonymously.
