The Legendary Janitor
Most people don't choose reincarnation. Reincarnation finds their way to them. Perhaps they did something great in their life. Or maybe truck-sama wasn't looking where it was going. But without fail, those who reincarnate are destined for something great. A new life where everything changes for the better. But... Reincarnation isn't always the greatest thing. Sometimes you just draw the short end of the stick. Di Tou just happens to have drawn the shortest stick. Pulled out of his life randomly. Taken by a crazy old eccentric man not as a disciple, but as a body double?! And a janitor body double no less?! Grasping a system to find... It's a JANITOR SYSTEM!? Truly, how unlucky can one get?
The Trial Grounds
In essence, the technique was as he imagined it. It had two supporting aspects that focused on nurturing the soul to allow it to both sense and connect to specific regions in the universe, the first being the so called 'home of the soul' and the second being a set location that he could set up. The two could coexist, although the creator directly noted it was probably better to follow one path or the other, as in the hectic state of soul form and with the potential damages that could come from being forced into such a state, having two paths could be confusing and potentially cause problems.
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Of course, this was all still theoretical, as this technique was ultimately never really perfected or tested due to the risks and sacrifices involved.