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Uno kept on switching the 'White Dawn Boundary' and 'Black Origin Threshold' which was really dangerous.
Professor Plum repeatedly warned Shin not to use these two breathing techniques together since it would not only destroy the foundation that he painstakingly built, but would also ruin his future.
Since the two breathing techniques were fully opposite of each other, the system and the rhythm that they had were also opposing each other.
They were not only affecting the minds of the user but they could also control the circulation of the Qi inside the body.
One of them was able to make one's mind tranquil, making the Qi circulation inside one's body completely tame.
On the other hand, the other breathing technique was able to make one enter a berserk state where their Qi became wild and circulated in a very violent manner.