1980s_(style), 1girl, ayukawa_madoka, bad_pixiv_id, bikini, black_hair, blue_eyes, cowboy_shot, dated, kimagure_orange_road, leaning_forward, long_hair, menyoujan, orange_bikini, retro_artstyle, signature, smile, solo, strapless, strapless_bikini, swimsuit, thigh_gap