Ok so this post is based on what Law said when fighting Big Mom and Kaido, that he couldn't move them around because they had "insane haki"
This statement brings up some questions regarding devil fruits and haki, that I will ask here and see if they can be answered
Does this work with every fruit
Law's overpowered fruit needed a counter, and haki became it, but does this apply to other fruits, like Sugar's or Boa's, 2 other fruits that would be a guaranteed oneshot if not.
This concept of haki counters fruit could be the same concept that makes haki the way to touch logia users, but toned up to straight up canceling the fruit's effect, in wich case it could expand to all other fruits, making you basically inmune to every fruit effect
2. Does this apply just to people, or if they infuse haki in objects, will the objects be inmune as well
We know that infusing an object with haki will allow it to hit logia users, and if we say this is the same effect but toned up, then this should be true with this effect too, wich would make swordsmen able to fight Kid, or anyone who uses a weapon in general fight Law
3. Does it depend on the user's and the victim's haki, or just on the victim
When Law made the statement, he just said "they have absurd haki", he didn't mention his haki, but Law isn't known for being a proficent haki user, and since you can infuse basically anything with haki, it would make sense you can infuse your devil fruit powers with haki too, making it harder to be countered
Luffy's fight with Kaido could confirm this, since Kaido was goofy as well, but this could be because Oda was just drawing the fight like that, or simply because it's the sun god nika so he bypasses haki or some shit, we never know with main characters