straitjacket, 1girl, gagged, gag, bound, bdsm, bondage, ball gag, red eyes, lying, solo, bound legs, bound arms, on back, restrained, arms behind back, wiffle gag, megumin, belt, looking at viewer, brown hair, short hair, barefoot, black hair, toeless legwear, full body, breasts, harness, sweat, buckle, ahoge, toes, small breasts, bound ankles, feet, stirrup legwear, blush, tears, on side, saliva