Hiroki Asanuma has been credited on Pokémon Trading Card Game illustrations since 2012, with work appearing through 2023. Across this span, Asanuma’s cards are seen in series including Sun & Moon, Black & White, and Scarlet & Violet, with set appearances such as Unified Minds, Cosmic Eclipse, and Obsidian Flames.
Asanuma’s Pokémon TCG imagery is characterized by vibrant color palettes and a playful, energetic mood, often organized in balanced compositions with moments of dynamic posing and clear character focus. The overall presentation frequently reads as colorful and cartoon-forward, with digital finish and occasional 3D-rendered sensibility. A representative credit is Stakataka (SM Black Star Promos). Among the most sought-after cards illustrated by Hiroki Asanuma is Mr. Mime (BW: Plasma Freeze).