1girl, armpits, arms_up, bikini, bikini_skirt, blonde_hair, blue_eyes, breasts, cowboy_shot, elf-chan_(sasaame), hairband, halterneck, looking_at_viewer, lying, medium_hair, microskirt, midriff, navel, on_back, open_mouth, original, pointy_ears, sasaame, skirt, small_breasts, solo, swimsuit