It's a reenactment of this Umamusume commercial back when the farming scenario was added and, yes, they're reenacting their respective jockeys' roles in said commercial.
@arieru258: Just pointing out that a pool's been created for this series, and that we'd appreciate it if you add further entries to it (in this case, you can just add pool:24029 to the tags). Just make sure it's actually part of the series first.
