1boy, 1girl, ahegao, all fours, bar censor, black hair, blue skirt, breasts, brown eyes, censored, collar, commentary request, doggystyle, fat, fat man, hetero, highres, himeragi yukina, leash, medium breasts, nipples, open mouth, plaid, plaid skirt, red collar, saikai academy school uniform, school uniform, sex, sex from behind, short hair, sincos, skirt, solo focus, strangling, strike the blood, testicles, topless,