This is unrelated but…, I just remembered a character a.I chat if when I said “I am micheal Jackson” and I was chatting with ai tanjiro and the bot replied with “ HEHE *moonwalk intensifies*”
Kokushibo is getting pissed off cuz she stole his breathing style and named the forms when he is the first one to make it and no one can do it only if they been lewrning from him