Imagine getting into a street brawl and in the confusion, a hole in reality just tears open. Your opponent falls out of site, never to be seen again, and standing over you is a monolithic, and thoroughly surprised-looking man who proceeds to hastily seal the hole and act like nothing ever happened. You may have won the fight, but you lost your innocence.

Alright, I willl admit: we haven't seen Saitama do anything on this level.