Originally Posted by JSensei

I went all event without getting a single Konoha, and then I got two from back to back opens. It's frustrating that the rate doesn't seem to be consistent. I'm just happy I got her at all. I was starting to think it wasn't happening.

Just keep plowing through those boxes. Sooner or later, she'll show up. Just might have to be later than sooner.

Hmm, i might assume the rate also is somewhat dependable on the box timer... I got my Konohas at those silver boxes that had just a few minutes left (<30) but this is just my guess.