2girls ;d absurdres artbook ball bangs bare_arms bare_shoulders barefoot beach beach_towel beach_umbrella beachball bikini blue_bikini blue_eyes blue_skirt blue_sky breasts cleavage cloud cloudy_sky collarbone day food frog_hair_ornament fruit green_eyes hair_ornament halterneck hat highres holding incredibly_absurdres kochiya_sanae leg_up long_hair looking_at_viewer medium_breasts miyase_mahiro multiple_girls navel ocean one_eye_closed open_mouth outdoors page_number palm_leaf palm_tree resized side-tie_bikini_bottom simple_background skirt sky smile snake_hair_ornament solo_focus stomach straw_hat sun sunlight swimsuit touhou towel tree umbrella upscaled water watermelon