Watch “What's In the box? Ep40c Pokemon Master Trainer: Expansion Pack (Pocket Monsters) Unboxing,” a board game unboxing on BoardGameVideo.
Description provided by Franksie's Mediocre Tabletop Gaming on YouTube:
I have here in my hands an actual copy of the expansion, thanks very much to Jerbq over on steam, who told me about buyee.jp which has helped me acquire a couple of Japanese games now including this. He has also uploaded it all to Tabletop Simulator if you want to give them a go yourself over there.
I have the basic translations to play with the set, so I can mix it all in with the Japanese copy I now own.
Music is the Team Rocket Rocket bit from the ending credits the season after the Poke Rap.