this is def not what you’re looking for, but tbh all i can think of is Newton’s Third Law (static equilibrium) or the laws of matter.
and my next guess isnt a conscious consequence done by a higher concept like fate, but moreso universal law of a world that does what youre talking about: “self-fulfilling prophecy”(?) or “strings of fate,” or even smth with terms like “damnation/doomed,” “cursed,” “collatoral,” or “wanderer.” maybe smth with the term “shcrondinger,” but if youre talking about a term found in manhwas maybe not.
if you find the word youre looking for, lmk bc im so curious as to what it is
I found it, it's called the law of causality :D Thanks for the suggestions lukewarn_piss! As u said, it's moreso a universal law to suggest everythings predetermined; the destiny of mankind is controlled by a God or law. Ig manwhas add on the effect of negative consequences themselves by punishing anomaly mcs who break this law or gods who intervene with human lives too much.
Can't remember this term off the top of my head. Its a consequence or concept/law of defying fate and paying the price. It comes up a lot in isekai/reincarnation manwhas. It makes everything go back to how fate intends it to be or punishes the person who broke it. Line or string of smth? Starts with a c or a s. If you're wondering why this terms so important i'm a writer </3