>>47326760For non-Japanese fans wondering what's up: This is the opening act for Pokemon Ryuuousen 2020, an official tournament held during late May last year. Its namesake, Ryuuousen, is inspired by a Shogi title of the same name. A literal translation of it would mean "Battle of the King of Dragons", hence Eternatus. Edit: Turns out it was held at the 29th of May 2021, which was a few days ago. Apologies.
