Beautifly done. This is an interesting take on 2 of the many unknown stories hidden in Majora's Mask. it almost feels canon. The Keaton's voice was a nice touch, sounding mischievous and mysterious at the same time, like the Cheshire Cat from Alice in Wonderland in a way.
I hope to see more "Keaton Tales" sometime in the future, the idea has potential to explain the many backstories of Termina.