Perhaps, Y'zaks was not the only demon interested in the universe. Some world somewhere, there may have been others who looked up to the sky and were fascinated by it. However, Y'zaks was definitely one of the most motivated and determined.
He realised that it was difficult to find the edge of the bubble zone, even with the combined resources of the entire demonic race. Furthermore, the constant wars around the world had seriously affected his exploration. So, he thought of unifying the world into just one camp—not for the sake of so-called righteousness or crusade; he only had one thing in mind and that was to find out what the universe was like outside the bubble zone.
