March 30, 2125, Blue Star Calendar—the 713th day of the 21,435th era of the Silver Federation Calendar.
That morning, a gigantic spaceship passed through a portal and appeared above a city in Feige Hub.
The ship was grayish white, the latest model of massive transport vessel produced by the Mosta Ship Manufacturing Company.
The city where it had appeared was Haminis City in Star Zone 170 of Feige Hub.
The moment the spacecraft appeared, many residents on the ground and inside the buildings noticed the enormous thing.
"Look! What a huge spaceship!"
"It really is."
"Huh? Why did this ship teleport directly above the city? Shouldn't it have gone to the spaceport first, according to the regulations?"
"Whoa! Don't tell me the rebel organization has attacked?!"
"Cut it out. How could it be the rebel organization... Though now that you mention it, some ships really can teleport directly into a city without going to the spaceport first. That's more common in Star Zones One and Two."
"Look, everyone! It's the '14573' emblem, right in the middle of the ship!"
"'14573'? Wait, let me see... Uh, it really is. That familiar big water-ball emblem."
"So it's '14573'!"
"Alright, disperse. Nothing worth watching here."
Seeing the familiar emblem, everyone immediately understood which faction the ship belonged to. It was "14573" again!
Then there was nothing to worry about. They had long since become accustomed to it.
The "14573" mentioned by Haminis residents referred to Blue Star 14573, the adventure group established by Blue Star Humans.
To make it easier to say, people omitted the less distinctive words "Blue Star" and simply called them "14573."
Two years ago, this adventure group had been founded in Haminis City.
Yet from the very beginning, the group had attracted widespread attention.
The reason was simple—this adventure