i think they can train eachother

i feel like even if it were canon or not this is definitely something that could happen!!! and if i remember correctly, kitasan black (the real horse) after retiring from horse racing kind helped "train" other horses by keeping them in fit or something along the lines of that

I think the idea of a retired Uma training another is super cool and Cygames should implement it.

HMMM💭 so glad this landed in my inbox. i think it might be canon that other umas can train... usually it'll be an uma who can't race anymore however. i'm too lazy to open the wiki