Because it was a presentation piece, the Pokmon card doesn't actually have artwork on the back and is instead blank
Matsuno has been with the hobby since Sword & Shield Darkness Ablaze and is known for the SWSH Black Star Promo Vaporeon V Alt Art, lonely Snom from Shining Fates , and most recently, the Ralts from Scarlet & Violet
I run Whisperer in decks like Nikya of the Old Ways and Ulrich of the Krallenhorde, both decks that heavily promote running creatures (Vivien, Champion of the Wilds) and discourage playing noncreatures (Ruric Thar, the Unbowed, Thorn of Amethyst)
Kabayashi has been contributing to the TCG since Sun & Moon Cosmic Eclipse
However, in Japan, collectors didnt have a 1st Edition set to search for