1girl, d, arm_up, artist_name, bare_arms, bare_legs, bare_shoulders, beach, beach_towel, bikini, black_hair, blue_sky, breasts, cleavage, cloud, cumulonimbus_cloud, dated, day, downblouse, feet_out_of_frame, grey_eyes, hair_between_eyes, hair_ornament, hair_spread_out, hairclip, halterneck, hand_up, haruna_miyabi, knees_up, lens_flare, long_hair, looking_at_viewer, looking_up, love_live!, love_live!_nijigasaki_high_school_idol_club, lying, medium_breasts, navel, ocean, on_back, on_ground, open_mouth, outdoors, outstretched_arm, red_bikini, sky, smile, solo, stomach, string_bikini, swimsuit, teeth, towel, upper_teeth_only, upside-down, yuuki_setsuna_(love_live!)