I adore that you went monochrome with this one. Just by picking up the energy/atmosphere, knowing the Pokémon, and seeing the environment.. it's almost like the viewer can already "see" this piece in full color and get 100% of that summertime vibe.
Sorta like when a song drops all instrumentals midway through but the singer keeps on singing; your brain still "hears" the music and can still maintain an internal beat even without it actually being there. Does that make any sense?
I love how I just got a visual experience of that with your art. Sometimes being understated or minimalistic in your creative choices can speak louder than color ever can. ଘ(੭ˊ꒳ˋ)੭✧