I'm sorry I-I just had to!
Especially after finding out the parallel's between Anna and Elsa's relationship to Oswald's and Mickey's. Also Elsa and Anna's father is a symbolization to Walt Disney in his younger years, which is so freaking awesome!!!
So I decided to do this little crossover, with Mickey visiting Oswald, during his first few years of life.
Oswald grows accustomed to his little brother. But as time passes by Oswald begins to avoid him, and with Charles Mintz brainwashing his innocent little mind, saying that Mickey is his replacement and Walt no longer cares for him, Oswald grows to hate Mickey and decides to no longer have anything to do with him.
Before any smart mouth says anything, I am well aware that Mickey didn't know Oswald until Epic Mickey. So please don't explain to me how they met. Just go with it!
Mickey and Oswald (c) Disney