1girl :d ball bangs bench blonde_hair blue_sky clouds day dutch_angle fang green_eyes green_towel hair_ornament hair_scrunchie highres horizon long_hair looking_at_viewer moe2017 monobe_tsukuri open_mouth original outdoors pleated_skirt ponytail racket scrunchie shirt short_sleeves sitting skirt sky smile solo sportswear tennis_ball tennis_racket tennis_uniform towel towel_around_neck wristband  1girl amami_mikihiro arms_up blue_eyes blue_hair breasts cleavage green_towel groin highres kuusen_madoushi_kouhosei_no_kyoukan large_breasts long_hair looking_at_viewer naked_towel novel_illustration official_art shiny shiny_skin solo towel towel_on_head  1girl animal_ears bare_shoulders blue_eyes blue_hair card_(medium) cat_ears cat_tail green_towel hair_ribbon looking_at_viewer naked_towel number onsen partially_submerged red_ribbon ribbon shinon_(sao) shinon_(sao-alo) short_hair short_hair_with_long_locks smile solo star steam sword_art_online tail towel 1girl black_hair breasts cleavage collarbone earrings female glasses green_eyes green_towel hasegawa_chisato jewelry large_breasts long_hair shinmai_maou_no_testament simple_background smile solo stitched towel  3girls aquila_yuna blue_eyes breasts brown_hair cleavage closed_eyes embarrassed green_eyes green_hair green_towel kido_saori kneeling long_hair multiple_girls naked_towel onsen ophiuchus_shaina outdoors partially_submerged pink_towel purple_hair saint_seiya_omega sideboob steam towel yadokari_genpachirou yellow_towel  1girl adjusting_goggles ahoge arm_up armpits artist_request ass_visible_through_thighs bare_arms bare_shoulders bikini blue_sky breasts cleavage collarbone contrapposto goggles goggles_on_head green_eyes green_hair green_towel gumi hair_between_eyes highres holding horizon innertube lipstick looking_at_viewer makeup navel ocean orange_bikini see-through short_hair sky smile solo splashing swimsuit vocaloid wading water きょん