I don’t know why Disney didn’t release this Oswald the Lucky Rabbit short in the West.
Or… actually, I guess I really don’t know why they released it in Japan. Maybe Oswald is a bigger deal over there (no, I’m not making that joke, it’s just a side effect.)https://www.youtube.com/watch?v=0_LSKRQdFW8
If you don’t know who Oswald is and why he’s particularly interesting, this old promotional clip for the Epic Mickey video game offers A Brief History.