yoshida keiji, kiyama harumi, misaka mikoto, toaru kagaku no railgun, toaru majutsu no index, 2girls, age difference, back-to-back, bag, breasts, brown eyes, brown hair, business suit, casual, electricity, electrokinesis, formal clothes, frog, hair ornament, hairclip, handbag, height difference, large breasts, long hair, mask, mature female, multiple girls, older female and younger female, pant suit, pants, pencil skirt, profile, raglan sleeves, short hair, skirt, standing, suit, unworn mask