2girls, bangs, blush, breasts, collarbone, completely nude, convenient censoring, erection, frip, groin, hair down, holding, holding towel, implied futanari, long hair, misaka mikoto, multiple girls, navel, nipples, nude, open mouth, parted bangs, pink eyes, pink hair, shirai kuroko, short hair, simple background, small breasts, soap bottle, symbol-only commentary, thighs, toaru kagaku no railgun, toaru majutsu no index, towel, wet, white background