Both horses IRL have the same jockey (Fukunaga), except when they were both in the same race in which case Fukunaga would ride Rhein Kraft.

Here Fukunaga is their trainer but is prioritizing Rhein Kraft over Cesario and treating the former like a lady.

So, NTR.

NNescio said:

Both horses IRL have the same jockey (Fukunaga), except when they were both in the same race in which case Fukunaga would ride Rhein Kraft.

Here Fukunaga is their trainer but is prioritizing Rhein Kraft over Cesario and treating the former like a lady.

So, NTR.

Not just that, but this whole 2koma is a reference to this specific contemporary joke, down to Sario's remarks

Poor girl was immediately sidelined by this new girl lol