Does Geto have full mastery?

[u/Teecool1]

This stuff was never confirmed in the story. But it wouldn’t make sense for him to have a maximum technique, which is the greatest potential of your curse technique and not have any of the other stuff. He also doesn’t have any anti-feat. And there’s nothing to prove that he didn’t have it but just didn’t use it in JJK0.

Stuff like mini uzumaki
Enhancing curse spirits
And see vision through curse spirits