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Shin's day passed quite early as he wrapped up his training earlier than the usual time. It was because he wanted to rest a little and recover his peak condition before logging in to the game.
But surprising enough, he seemed to have learned more of the sword principles during this shorter period of training. He did not only learn more wills that he could infuse with his sword, but the training itself became more efficient.
He suspected that it might be because of the earlier enlightenment that he had gotten inside the game. Applying what he learned in his battle style and putting it into practice greatly increased his understanding of different sword principles.