ningyoushi, asuna (sao), sword art online, variant set, 1girl, air bubble, armpits, arms up, bound, bound arms, bound legs, breasts, breasts apart, brown hair, brown pupils, bubble, cleft of venus, collarbone, completely nude, curtained hair, dark background, dutch angle, flesh wall, gluteal fold, groin, half-closed eyes, legs apart, long sidelocks, navel, nipples, nude, open mouth, pussy, restrained, shiny skin, sidelocks, solo, stuck, swept bangs, teeth, thighs, through wall, tongue