Board Thread:Naruto Discussions/@comment-45851667-20200520192705/@comment-32685487-20200522170408

He wasn't, his statement made no specifics, but thats where context and logic come in. The crow had Shisui's eye since Itachi was 11, the 4th War happens when Itachi would be about 22. Shisui himself had 2 eyes and used most likely used Koto after he was 6-7 when he awakened his MS(check Seelentau's timeline as it uses the Itachi Shinden novels too) and he later dies at about age 13-14 which then the crow has his remaining eye and Danzo gets the other. Shisui himself definitely did not have a 10 year cooldown on each eye for his Koto. The crow on the other hand has far less chakra, is not an Uchiha.. and is a dang crow and Itachi knows that so 10 years cooldown for Koto makes sense because of that alone.