1girl, arms behind back, bangs, bikini, bikini top only, black hair, blue eyes, blush, body writing, bottomless, breasts, collarbone, gradient background, hairband, irokohaku, large breasts, leaning forward, lessar, long hair, looking at viewer, low-tied long hair, multicolored hair, navel, open mouth, red bikini, slit pupils, smile, solo, standing, streaked hair, string bikini, swimsuit, tally, toaru majutsu no index, two-tone hair, very long hair