SiL's scenario is really good but the ending left some bitter after taste to me because I'm not a fan of ambiguous reunions...
I heard the onsen happens after but IDK if it will make me satisfied.

But the scenario is really good though I don't think I'd want another ending like that... I've always been a big fan of Umamusume being about these horses resolving their regrets and getting the best ending since it already feels like this entire world is horse afterlife. Now I want them to turn this into a movie and somehow give a more concrete closure.