Edit: Okay, I did some research to better understand what you were asking for. I found it here: https://www.bilibili.com/video/BV1AM411B7tW?p=3
Original comment: At the risk of saying something stupid: Is this not the correct thing? https://youtu.be/Iepb3R9kW3s It was the first result on YouTube. Are you looking for it in particularly high quality? (I don't know Pokémon well, sorry if it's the wrong show or wrong version).