1girl, ass, bikini, bow, breasts, brown eyes, brown hair, butt crack, closed mouth, crotch, fujikawa daichi, hair bow, looking at viewer, looking back, purple bikini, shadow, shirai kuroko, side-tie bikini bottom, simple background, sketch, small breasts, solo, swimsuit, toaru kagaku no railgun, toaru majutsu no index, twintails, white background