Kid/Law awakening seems very similar to Kata/Doffy by affecting "other" objects
Kid -> Object is Big Mom instead of himself
Law -> Object is his sword. (In fact the "K" in KROOM could refer to his sword name). Usually he couldn't pierce BM. But by turning his sword into a "room" he go through Big Mom.
Kid -> Object is Big Mom instead of himself
Law -> Object is his sword. (In fact the "K" in KROOM could refer to his sword name). Usually he couldn't pierce BM. But by turning his sword into a "room" he go through Big Mom.