Board Thread:Naruto Discussions/@comment-24824148-20160724215526/@comment-25122992-20160725142017

JOA20 wrote: Most likely Obito didn't show any blindness problems because he had Hashirama's cells embedded in his body. Seeing how the First's DNA allowed Danzō to use Kotoamatsukami more than once per day (when usually it'd take a decade to recharge the Mangekyō after each usage), it doesn't sound that far-fetched. Although it's somewhat out of topic, I don't think that Shisui, the Mangekyo original owner, had this limitation of "once per decade". Rather, it was the limit of the crow which possessed Shisui's left eye. It's a crow after all, it wasn't even supposed to use techniques. So it's hardly possible that Shisui was limited by the same rule as this crow. He likely had some limits in Kotoamatsukami usage anyway, but surely not this one per 10 years rule.