Note: Cybersystem Gaiden is set to occur in the world of Cybersystem Chronicles, but centered on another character that is also in the Cybersystem RPG.

Chapter 2: The First Shield

Seven years prior to the start of Cybersystem's story...

Academy District of Hokuto City, capital of Seikuu...

The dismissal bell resounded in The Academy upon the clock's striking at four in the afternoon. Students of various ages eventually come out of the doors of the institute to make their way around the city either to find a place to relax, some to do research, while some to spend their time with their family. One youth in particular, the one called Seitamashii Ryuu, went straight back to his room in the dormitory, in his hand is a box containing the basic PET unit that has a customizable Navi program. Running quickly, Ryuu slams the door behind him as he entered his room and set aside his bag on the bed. He then takes the box and sits before his study table, putting the box on the table as anticipation builds within him.

"Yoshi! Finally I have my own Navi!" Ryuu exclaimed as he opens the box to take out the PET within. Turning on his PC, Ryuu puts the PET on the plug-in terminal that is attached to his computer.

After the computer fully boots up, it detects the PET's systems and performs a check. It then fires up the application that involves the setup of the PET's operating system and eventually the Navi.

"PET operating system setup complete, please insert Navi data disk into your R-drive (readable drive) and press Enter"

"This is it then..." Ryuu said as he takes out the disk that came along with the PET, found inside the box. The disk has Ryuu's name written on it, along with a label saying "Navi data disk" on it. Ryuu placed the disk into his computer's R-drive and pressed Enter, then waiting for the computer to put up the Navi data into the PET.

"Hmmm...." Ryuu said as he checked how long the process would take as shown on the computer's monitor, "Forty-five minutes...? That's awfully long... Maybe I can do something else while waiting for it to finish..."

After the time has passed, Ryuu comes back and takes a look at the monitor. A program has opened with a display showing details and parameters of a Navi that Ryuu has remembered back when they have started learning about Navis.

"Yokattane! Now all I have to do is to allocate bits to the parameters," Ryuu said as he moves the mouse over the bit pool. Allocating bits to the various parameters, "I will focus on defense and toughness, so that my Navi can take an attack and still stand up to fight..."

"Of course, I should put some points in accuracy and evasion so that more fatal attacks can be avoided... and so that I can hit the opponent's Navi or a fast-moving virus...."

"His appearance has to show that he is tough..." Ryuu then said as he started to select the parts for his Navi's physical appearance, "A bit of the armored look will show it, but not too big as to impede on maneuverability... His overall color would then be green..."

"Hmmm.... I'll give him the Earth setup, so that it will supplement and further boost my Navi's capability to survive in Netbattles..." Ryuu said as he then turns towards the battlechips, "And a variety of support and defense battlechips to complement with offensive battlechips to wear out the opponents...."

Once Ryuu has entered the needed information for his Navi, all that is left for him to do is to provide a name as the computer prompts him to provide a name for his Navi.

"Hmmm.... a name...?" Ryuu wondered as he takes out a list of names he has already prepared for his Navi. Several names have already been crossed out with comments such as "Too simple" or "Too strange" written beside them.

"Since my Navi is going to be a tough to beat earth elemental.... I think this name will do..." Ryuu said as he pulls out the keyboard and proceeds to type the letters G, A, I, U, and S into the name entry field and pressed Enter. The PET beeped as it starts to receive the information for the Navi, making room to its most crucial part of the system. The PET displayed the approximate time to finish the Navi's construction: minimum of two hours.

"Nani da yo!? Two hours!?" Ryuu exclaimed as he looks at the PET's monitor and then to his computer monitor. No doubt that the files are indeed big in size, as expected of more recent custom Navis... especially of the Seitamashii variety. Ryuu checks his watch, and realizes that he might as well leave the computer on for the night to complete the final installation. Changing to his sleeping clothes, Ryuu then lies down on his bed and proceeds to sleep.

Late in the night....

As Ryuu slumbers peacefully, the final installation has completed. A Navi according to the design that Ryuu has set appears on the PET's monitor, looking at itself silently before looking at its surroundings. Realizing that it is late in the night, it simply keeps quiet as it performs a diagnostics check of itself.

Morning soon comes as Ryuu's alarm clock beeps loudly, causing Ryuu to turn and toss in his bed as he reaches out for the alarm clock's button to turn it off.

"Hnnnhhhh.... Just a few more minutes..." Ryuu said lazily as he turns back to doze off once again. Just as he is about to fall asleep once again, a loud beeping resounds in the room once more.

".......? Nani ka...!?" Ryuu wondered as he finally got up from bed and looked to where the beeping noise is coming from. He then notices his computer having a sound program activated to make the beeping noise. Coming forward to turn off the sound program, Ryuu then looked to the PET on the side of the computer.

"Better change your clothes, Ryuu," the green figure inside the PET said to Ryuu as he stares at its monitor, "You wouldn't want to be late for school."

Ryuu blinked a few times as he continued to stare at the Navi in his PET, eventually grinning with excitement. Taking the PET off the extension port connected to the computer, he takes a closer look at his Navi.

"Gaius...?" Ryuu asked as he looks into the monitor of the PET.

"Yes, Ryuu... that's the name you gave me..." Gaius nodded as he tries to move the topic back to the more pressing need, "Now, about..."

"Yokattane! My Navi is complete!" Ryuu yells out in joy as he quickly places his PET on the available belt strap included with the set and goes to take a quick shower and change for school.

".... At least he's quick in getting changed for school..." Gaius mentions as he crosses his arms while nodding as-a-matter-of-factly. Ryuu picks up his PET and his backpack, locking the door of his room before running off to school.