he def looks like hes crying but im wondering why he only is showing his sharingan eye and not both eyes. usually when kakashi is shown using the sharingan he has both eyes showing or only his normal eye. i think kakashi saw the same thing obito saw and thats how they both gained their ms. they witnessed the death of rin by a zetzu clone that was looking like kakashi, the best friend they had in common besides each other. i could certainly be wrong, but this is my theory.