Robin Appeared sarcastic and started poking holes in the Nihari power system, but what was going on in his mind was entirely different
'Which Motherfucker has invented the system of internal energy foundations and Heavenly Law Pillars?! Why is it so hard for us while others live happily with no worries?!!' Robin cursed in his head
Actually, there was no *one* that invented the foundations and pillars internal power system, it was developed over the thousands of years by multiple geniuses until it reached its current form, and none of them can say that he is the true creator of this system.
Also, most of Robin's rage was not towards the ones who invented this internal power system, but towards himself, because he stuck himself in this box and refused to think outside it...
He thought in every way about how to develop it, but did not try to think of other possibilities.
But in the end, he sighed and shook his head, 'maybe that's for the best..'