Luke now knew the exact reason for such a reaction of his body. He was no fool but that didn't mean he could believe whatever came to his mind.
He had to think carefully and logically while considering the possibilities of things happening.
'Yeah...'
'The blood running in my vessels is no longer the same that was in my old body.'
'And since the potion was made because of that old black blood, it is trying to reject the blood of this body.'
With this Luke confirmed that only his memories were inherited and everything else was different about him.
'Tsk, who knew that just difficulties would arise if the potion was to be given to a different body.'
Luke realized that the potion's power was tremendous, but if no one could use it, it would be a waste.
He figured out the problem which was in his body and now understood the real effectiveness of the elixir as well.
'I wonder who was that reckless bastard that drank this elixir...'