Board Thread:Theories and Speculation/@comment-36512555-20200223173047/@comment-34656247-20200224013057

Not like Obito can see frog Kata to use Kamui.

It's hard to tell, if we had a single showing of it being used on an alive person then that would've been sufficient. Juubi jinch characters, chakra mode Naruto, 3rd Raikage are some that should definitely withstand it though