This book follows the musclebound Nimmond Takeshi, the protagonist from the start of Ultraman Dyna. Dyna will have a two-person mode: Nimmond will be the Strong Type, while Asuka will be the Miracle Type. At first, they’ll only be able to transform together. Later, they’ll be able to transform individually, but the Flash Type will still require them to fuse. Even without fusing, the two of them can use one of the two forms mentioned above. They’ll also have the light of the sky empowering Strong Type Dyna and Miracle Type Dyna.
A few notes: There’s only one heroine. The Hira-Asuka pairing won’t be broken up, and there won’t be a runaway bride (?). Strong Type Dyna relies on physical power rather than beams, so he’s slow at flying and running, but his agility stays the same. Miracle Type relies on beams rather than physical power and seems to be faster, too. When the two aren’t fused, they have certain limitations. Once they fuse, they can complement each other and further power up all three forms. They’ll even need to fuse to travel through the universe. The two kinds of light mentioned above can also combine to further strengthen them individually, but they’ll lose the coordination and suppressive power of fighting as a pair.