1boy, 1girl, age difference, arms behind back, bdsm, blurry, blurry background, bondage, bound, bound arms, breasts, classroom, clothes lift, deepthroat, desk, fellatio, from side, hair ribbon, hetero, indoors, irrumatio, large breasts, long hair, long sleeves, lying, monochrome, neckerchief, neckerchief between breasts, nipples, on back, on desk, oral, original, osomatsu (nanameno), pants, penis, ponytail, rape, red eyes, red neckerchief, red ribbon, red rope, reverse fellatio, ribbon, rope, sailor collar, saliva, school uniform, serafuku, shibari, shirt, shirt lift, skirt, spot color, teacher and student, tearing up, throat grab, trembling, wide-eyed