[Cameo by the previous novel’s protagonist] + [Cameo by the protagonist from two novels ago] + [One heroine] + [Slow burn]
Gamu Takayama, a decent young man from Earth, was chosen by Earth’s consciousness while simply passing by and sent to the world of Gaia, where he became Gamu Takayama, also known as Ultraman Gaia.
When he encountered a Zetton who looked a lot like a villain and returned to his own world through her, he discovered that his world had been invaded by monsters...
What else could he do? As Ultraman Gaia, of course he had to save Earth.
“Gai, ya!”
