You have to have another Sharingan (someone blood-related) to get EMS. He never had a Sharingan to begin with and he isn't an Uchiha, so there is no way for him to get EMS.Kakashi has already known loss in the past, maybe he just had to train to a certain point and practice its use until it became MS. And since it was already an implanted eye it became EMS right off.
Yes there is Naruto kills Sasuke Kakashi sneaks over and takes his eye.You have to have another Sharingan (someone blood-related) to get EMS. He never had a Sharingan to begin with and he isn't an Uchiha, so there is no way for him to get EMS.
Its been said that it works best like that, but never said thats 100% necessary. If thats the case why isnt his sharingan going blind and why doesn't his eye bleed when he uses MS? Thats how it works for Uchihas to get EMS but thet already have sharingan. But since implanted eyes after gained MS become EMS, maybe it just worked in different order for him since he wasn't a natural born sharingan user.You have to have another Sharingan (someone blood-related) to get EMS. He never had a Sharingan to begin with and he isn't an Uchiha, so there is no way for him to get EMS.