Ok today I've seen a bunch of theories saying that it was kakashi that killed rin. Well I have proof that its not him. Or something happened to where he wasn't in control of himself.
Here:
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Obito said "you let rin die"
Now from today's chapter we saw that obito witnessed kakashi killing rin. If that is the actual truth then I believe obito would have said something like "you killed rin" instead of let her die. I know we will find out next week but there is more to what happened between kakashi and rin. We just have to wait and see but in the mean time the "that was definitely kakashi" threads should stop.
Thank you for your time.