follow me into the rain

Sometimes you happen to notice certain physical resemblances between a couple of characters and even though you're PRETTY sure the creator didn't mean anything by it, you can't get the idea out of your head.
What to do? Well, maybe you put pen to paper and label it crack.

NOTE: No spoilers as such, but some of this won't make much sense if you haven't read manga chapter 434.

( Images read left to right )