1girl, ass, bad_twitter_id, bikini, blush, bow, breasts, brown_eyes, brown_hair, closed_mouth, fujikawa_daichi, hair_bow, looking_at_viewer, lying, on_stomach, purple_bikini, shirai_kuroko, side-tie_bikini_bottom, simple_background, sketch, small_breasts, solo, swimsuit, thong_bikini, toaru_kagaku_no_railgun, toaru_majutsu_no_index, twintails, white_background