Oooh, this is a nice topic!
This is very likely the first version of what would eventually become Masahiro that I ever drew, back in college. Which is, uh, six years ago now? At that point, I had NO idea what I wanted to do with him - I just wanted to draw some dude with a sword and one arm.
This earlier version of him had an arm chopped off at the shoulder - the current version is only missing his hand from the wrist down. .... Also, the current version doesn't have a comically oversized sword. XD
More current pictures, from the last year or so:
... but he's stayed basically similar to the first iteration. I've changed his age, I've changed the extent of his missing bodypart, I've tweaked his clothes, but you can still see they're intended to be the same person.
Kazue, on the other hand, has changed a LOT.
This is Kazue circa 5 years ago. I think this is the first time I ever tried to draw her. She didn't even have a name at this point - she was just "Sidekick #2".
THIS is Kazue now:
