A sharp blue-eyed teenager stepped off the high-speed hyperloop capsule across the United Defender Association Office. This teenager is of course Alex Volff. Alex made his strides towards the huge building that stood across from him. The UDA office is a 50 stories skyscraper that stood in the center of Kyoto, Alex's hometown which also happens to be the hometown of the strongest Defender, the First Defender, Keisuke Kagawa.

The UDA came about around 10 years after the opening of the Realm of Defenders. It was formed by the 10 strongest Defenders to manage all activities relating to the Realm. Before that, anyone was free to enter the Realm of Defenders. This caused very high death-tolls for people who were enticed by the promise of wealth from the Realm and entered without sufficient preparation. There were also evil people who gained power from the Realm and caused chaos around the world.

Now, every portal to enter the Realm of Defenders are being guarded by the force from UDA. To enter the portal for the first time, a person needs to register and pass a test. It ensures that the entrant is sufficiently prepared and if there are evil people who cause chaos, it would be easier to subdue them because the UDA already have their personal information. Nobody dares to oppose the UDA because it has the strongest force in the world. It is being led by the 10 strongest people on Earth, and it has massive quantity of Defenders as its military force.

....

Alex entered the building and went straight to the receptionist. She informed him that the registration office is on the 3rd floor and gave him an access card to ride the elevator to the 3rd floor. As he stepped of the elevator on the 3rd floor, another female receptionist greeted him.

"Welcome. Are you here to register as a Defender?"

"Ah, yes," Alex replied while being flustered with the equipment he could see through the glass walls of the rooms around him.

"Then please fill in this form with your personal information and please hand me all the required documents so I can process them," the receptionist said to him while handing him a tablet showing a registration form.

Alex handed her the documents and started filling in the form. After he finished the receptionist quickly processed his data.

"Your data has been processed. There are two parts to the Defender registration test. First part is the writing test and the second part is the physical test. Please enter the room to my left for the written test. You can enter any unoccupied capsule to start the written test. You have 90 minutes to finish the first test. Good luck."

Alex entered the room for the written test after nodding to the receptionist. There are 10 capsules there and there is already one occupied capsule. Seems like someone else is taking the test. Alex chooses one of the unoccupied capsule and entered it. The written test is about the basic information regarding survival in the Realm of Defenders. As this information has become a world-wide school curriculum since 7 years ago, most people don't have a problem with this first test.

Alex quickly finished the written test within 60 minutes and moves on to the physical test. The other person taking the test with him is nowhere to be seen. The physical test involves punching test for strength, running for speed, dodging for agility, and one-hour fighting a mechanical opponent to test endurance. After finishing all the test required he waited nervously for 15 minutes to get the result. The receptionist soon called to him to hand him his test result.

"Here is your test result, sir. Congratulations! You passed the test. Please wait for another 15 minutes while we process your Defender Identification Card," said the receptionist to him using a more respectful tone than before.

Alex replied to the receptionist a little flustered, "ah, okay. I will wait."

He immediately went back to sit and wait. After getting rid of the initial surprise, he soon wore a big smile on his face and clenched his fist.

"I did it! Father, wait for me. I will soon find you."