Talk:Black Ice/@comment-37511870-20190218041614/@comment-4558186-20190218043147

Well, based on the backstories as how I understand them, all three of them left the Land of Water when they were very young. Now Black Ice techniques are extremely dangerous and hard to perform and would not be taught to children who would not have even mastered normal Ice Release yet.

By the time your 3 OCs would have graduated, most masters of Black Ice would be dead and the rest either in hiding or acting as Kiri shinobi and not liable to teach outsiders and potential enemies a powerful technique.