1girl, amagami, bare_shoulders, black_eyes, black_hair, black_one-piece_swimsuit, blush, breasts, closed_mouth, competition_swimsuit, cowboy_shot, large_breasts, one-piece_swimsuit, ponytail, serizawa_(serizawaroom), short_hair, solo, swimsuit, thigh_gap, tsukahara_hibiki, two-tone_swimsuit, undressing