Customers ordering katsudon at Cafe Manhattan is a running gag among various artists by this point. This one comes with a happy twist tho.

NNescio said:

Customers ordering katsudon at Cafe Manhattan is a running gag among various artists by this point. This one comes with a happy twist tho.

To be fair, Gorou would be the kind of person that wouldn't miss a beat on ordering whatever specialty a given store has to offer.