Cool game! I really enjoy that the game has a powerful message in relationship with the theme. It's a truly nice idea! There are tons of games "where you control two characters" out there, but your twist is a very good one.
The controls need a bit of refinement ^^'. Walljumping needs spamming and having to run into our friend to press shift is needlessly tedious and very imprecise ^^'.
Otherwise, I enjoyed that little platformer, and it made me think that a lot of games are not disabled-friendly! Congratulations =)