Hayata Susumu, transported to the aftermath of the original Ultraman series, initially thought he was on the path to Ultraman, but a group of scientists suddenly appeared and captured him for experiments, claiming he was Ultraman's human host. Just when he thought he was on the path to Ultraman F, the scientists found nothing on him and had no choice but to let him go. As he decided to live as an ordinary person, a new crisis confronted him. Seeing the mechanical Ultraman created using human science, and King Joe closing in, Hayata Susumu realized: he was on the path to Gundam! This is a story about humanity protecting the Earth through its own efforts after Ultraman's protection is gone.

I, Jiang the Slime, unexpectedly found myself in Overlord, but with no goals in mind, I'm just waiting to die. This world is a sequel to Ainz Ooal Gown and Sword Art Online. This is just a small world; our goal is the stars and the sea!!!

The protagonist, Lin Chen, transmigrates to another dimension and is fortunate enough to become a Gundam pilot. He uses his knowledge of mechanical engineering and his understanding as a Gundam enthusiast to transform himself from a novice into an ace pilot!