When Rein got to know about the spatial rifts, he became quite interested in that. From the information Rein got after joining the Heavenly Secret Hall, his research about the space increased by a huge margin. This research result even gave Rein a hefty amount of achievement points too, which was a pleasant surprise.
After going through all the results, Rein was very impressed. The Dimensional God temple lived up to its name and had really progressed a lot in understanding the space of this world. So when even this extremely knowledgeable sect was unable to find the demons inside a spatial rift, it attracted Rein's attention.
Rein started to research on this subject and came up with a few hypotheses. But he needed to do more research to be sure if his thoughts were correct or not. So he started his experiments. For the first experiment, Rein tried to mark a demon to see if he could track it even after it had entered the spatial rift.
This process did work at all but Rein was not disappointed as he knew that it would most likely fail. He was not the first person who had tried this method but all of them had failed. But Rein did not use this method to actually track that demon but to see what was the reason why he was unable to detect the demon's presence anymore.
From what Rein was able to observe, this spatial rift was not located at an exact point of space and instead it was moving around. What was blocking the tracking from working was the turbulent layer of space that was separating the spatial rift from the world.
Actually the Dimensional God temple was also located inside a semi-formed spatial rift. But even then they were able to bypass most of the detection methods. So searching for the demon race who were most probably hiding in a fully formed spatial rift would be extremely difficult.
But after investigating the semi-formed rift where the Dimensional God temple was located, Rein found quite a few flaws in it which could be used to find this place from the outside world. Now Rein just had to see if these flaws still existed in the perfectly formed spatial rifts or if they had disappeared.
Rein immediately attacked them and his wives captured the human traitors. As for him, he started to fight with the demon god. After cultivating for two more years in the ideal atmosphere of the Dimensional God temple, his strength had increased by quite a bit and he had reached the Spiritual Awakening realm.
Currently Rein was able to defeat most true gods in a frontal battle without much trouble without using any of his other skills. But even then Rein was unable to defeat this demon god in a short amount of time. Both of them were almost equally matched in terms of power.
Understanding that, the demon god started to retreat with the intention of returning to the spatial rift. He did not know that the human side had someone who could match him in one on one combat. This was a very big news and he needed to inform the others.
But Rein was obviously unwilling to let this fish run away. He had not used any of his other skills mostly because, he wanted to check his current combat power. But now he was almost done with the checking so Rein activated his Furnace Body.
Immediately Rein's combat power soared and in just a few exchanges, he badly injured the demon god. Even just getting a boost from the furnace body was enough to make Rein almost invincible in this world. And that was how the situation of the demon god running away in fear in a half dead state was created.
But it was not able to run for too long and soon Rein caught up to it. This demon god had a rare special skill related to space so it was extremely good at running away. Most probably no other demon god but this one came out because everyone was confident that even in the worst case scenario, at least this demon god would be able to run away. But meeting Rein was a very unfortunate thing for it.
Soon Rein made the demon to faint and captured him for interrogation. The weaker demons only knew the way they needed to enter the spatial rift but nothing else. Humans were unable to use that method of entry. But a demon god would most probably know a lot about how the spatial rift worked and Rein was looking forward to learning more about it from him.