Daika Ultraman is the new O who inherited the Triga worldview, equivalent to the Dana of the parallel world. Deca's enemy is Sphia, but unlike Sphia, who doesn't have a strong sense of presence in Dana. According to intelligence, Sphia will be the main villain of Daika Ultraman, and should appear more than Sphia in Dana.
Daika Ultraman's heroine name is Kirino Masayoshi, played by Yuka Murayama, with an optimistic and straightforward personality, full of responsibility, not only hot blood but also natural stay. Kirino is in charge of the elite victory team's ground attacks, and attaches great importance to friendship with his companions, and together with his partners, he strives to pass on smiles and courage.
So why is Kirino "trying" to pass on smiles and courage?
The background of The story of Daika Ultraman is that 9 years after the Finale of Theliga, humanity further develops into the universe. One day, the mysterious sphere Sphia strikes and attacks Earth, cutting off the connection between Earth and the universe, turning Earth into a "lone planet."
Internet rumors that Daika is a doomsday theme, from the introduction of The Daika heroine, almost.
Kirino strives to save his life-and-death companion from Sphia's attack, hoping that one day the earth will return to peace and a world where everyone can pursue their dreams without hindrance. According to this text, the situation of Daika Earth is very similar to that of the future Earth in Ultraman Legends.
In Ultraman Legends, the Baxters use the future Earth as a testing ground, where humans live in fear and are deprived of their freedom and dreams. What Sphia did to Deca Earth felt the same way. I don't know what Sphia's purpose is, whether he is also using the earth as a testing ground, or whether he wants to open the eternal core door that has been lost.
For Dyka's doomsday theme, I feel that I can't do what I imagined, but I can get by.