i'm just trying to think of how kakashi got his MS since we know he didn't kill his best friend. i know some people say that he got it from obito's death, but if that were the case he would've had it this whole time since it seems to be pretty instantaneous. so kakashi is a very special shinobi and was given a very special gift, in the sharingan of obito. do you think, in the narutoverse, that even though the eye is not in it's original body that it may, some how, be tied to obito if he were living? i know there's a lot of debate as to whether obito lives but let's just assume he is, just for this theory. so if obito lives and if there's still some kind of tied between obito and the eye he gave kakashi then would it be possible that obito killed his "best friend" which gave him MS AND MS in the eye he gave kakashi?