[System Power Fantasy + Transmigration + Worldbuilding in Another Realm + Saving Humanity]
A dream-travel machine meant to traverse time and space sends its user to another world instead! Floating islands? A high-tech metropolis? Will they be humanity's savior or a construction maniac?
The people from various dream realms who are rescued and brought to the floating island are stunned!
In a world overrun by dragon beasts and ruled by savage chaos, how can there be such a vast floating-island metropolis?!
