1girl, ass_visible_through_thighs, bare_arms, bare_shoulders, black_one-piece_swimsuit, breasts, brown_eyes, brown_hair, collarbone, competition_swimsuit, covered_navel, feet_out_of_frame, flower, groin, hair_flower, hair_ornament, hand_up, looking_at_viewer, medium_hair, misaka_mikoto, one-piece_swimsuit, parted_lips, raika9, small_breasts, solo, swimsuit, toaru_kagaku_no_railgun, toaru_majutsu_no_index, tokiwadai_school_swimsuit, twitter_username, two-tone_one-piece_swimsuit, two-tone_swimsuit, w, white_flower