And now with the powers of the Jitsu system, he was now able to absorb dragon Geno cores,half-dragon Geno cores and the Geno cores of other monsters related to the dragon family, unlike the regular Geno systems that would only give the option to absorb pure dragon Geno cores.
Soon after realizing the power of a Jitsu system, he decided to continue on his quest for strength.
It's been three hundred years, and now he is at the peak of the Geno world, so he decided to call himself dragon good.
Then he began to destroy some mountain and forest regions in the Geno world, and in place of the mountains and forests, he created buildings, residence's,plat plams and other building structures all over the Geno world, then he created forcefields all around the buildings he created, so only humans can enter and leave into the building structures as they please, creating a safe haven for other humans that are going to enter inside the Geno world, and with all that done he finally decides to leave the Geno world, and go back to Earth for a while.
....
Appearing back on Earth he found out that only three years had passed while he spent three hundred years in the Geno world, but he soon held a meeting with all the world leaders, telling them of what horrors were inside the Geno world and what he had accomplished in there, but he also left some information out of what he was telling them, like his Jitsu system or some mysterious things he found out about the world,and after the meeting he told them something very mystifying he said " I am now headed to God's sanctuary,this might probably be the last time you see me and if you really need me, send someone over to God's sanctuary." And after saying that he flew with lightening speed back inside the gate and disappeared out of humanity's history and only the powerful knows about this event.
Soon, people were now allowed into the Geno world but only if you are at the age of eighteen,.
Now from time to time legends were born in the Geno world, one by one but they all disappeared after saying the same words to the world and that was " I will now be headed to God's sanctuary."