Ao was an experienced veteran, having been raised under the feared regime of the Bloody Mist and having fought in war, even before the advent of the Fourth Shinobi World War.[2] He has clashed several times with Konoha shinobi. At one point he defeated an unknown Hyūga, taking one of the Hyūga's Byakugan and implanting it into his own right eye socket. Later, he had a confrontation with Shisui Uchiha, which left enough of an impact on Ao for him to clearly remember Shisui's abilities and his chakra colour long after the event.[3]