so-ko, ako (blue archive), ako (dress) (blue archive), kayoko (blue archive), kayoko (dress) (blue archive), blue archive, 2girls, anklet, arched back, arms under breasts, back, backless dress, backless outfit, black bow, black choker, black dress, black hair, black hairband, black shoes, blue dress, blue eyes, blue hair, blush, bow, breast lift, breasts, bright pupils, brown shirt, choker, cleavage, cosplay, costume switch, covered navel, dress, embarrassed, from behind, from side, hair bow, hairband, halo, horns, jewelry, large breasts, lips, long hair, looking back, medium breasts, medium hair, multicolored hair, multiple girls, open clothes, open shirt, pendant, pendant choker, red eyes, shirt, shirt on shoulders, shoes, sideboob, sideless dress, standing, tears, two-tone hair, watermark, wavy mouth, white background, white hair, white pupils