I sure hope this is just a convenient scapegoat clone, and not that the clone was so well brainwashed he somehow tapped into memories he didn't have, in order to feel regret.
i now know the ending: uruma will kill kyouchan, and get arrested, only to discover it's a clone and the real kyou chan would come out and say "omoshiroi! "
Wow, just like how in X-Men, Mystique's power to impersonate anybody is beyond fucked up powerful than what the writers can portray if you think about it.
Gosho did the same thing in Conan when you have characters with perfect disguises that can impersonate anybody even opposite sex.
Now here we're completely running rampant with this. So we have infinite more Juns and who knows who else in this comically powerful organization. Yeah what is a super killer even going to do against that?