amiba48, bad id, bad pixiv id, translated, 1boy, 1girl, ahegao, barefoot, bdsm, black hair, blush, bondage, bound, breasts, brother and sister, censored, cowgirl position, cross-section, feet, femdom, flat chest, fucked silly, gag, gagged, gagged male, girl on top, heart, hetero, improvised gag, incest, long hair, lying, nipples, nude, open mouth, penis, petite, rape, ribbon, sex, siblings, squatting, straddling, sweat, tape, tape gag, toes