It is one. Remember. Only one clan can do it and it takes two chakra natures. If I remember correctly you need the because remember. Dust release muu has is called a kekkei tota “if I spelled that right” and it called that because it uses three chakra it’s been a while since I’ve watched that episode where Kakashiexplains what those are to Naruto. I think Yamato. Was there too. It was the episode Naruto was learning he was wind nature
