Tenkuu Shinpan Arrive

This sequel introduces a new group of characters and setting. Senya, an ordinary man with childhood dreams of becoming an astronaut, is abruptly taken to another world after spotting a tower-like structure in the sky from his school rooftop. He finds himself in a devastated landscape where tall buildings are linked by suspension bridges. Confused, he sees a girl on a distant rooftop and a masked man with a bloodstained weapon.