1girl, aketa_mikoto, beach, beach_umbrella, blush, breasts, brown_hair, casual_one-piece_swimsuit, cleavage, collarbone, eyewear_on_head, gradient_hair, grey_shirt, hair_over_shoulder, haruyuki_(gffewuoutgblubh), idolmaster, idolmaster_shiny_colors, large_breasts, light_smile, looking_at_viewer, multicolored_hair, one-piece_swimsuit, shirt, short_ponytail, side_ponytail, solo, swimsuit, tinted_eyewear, umbrella, upper_body, white_one-piece_swimsuit