1boy, anus, ass, bar_censor, bent_over, black_hair, blush, brown_eyes, censored, clothes_lift, crossdressing, flaccid, foreskin, from_behind, kneeling, male_focus, open_mouth, otoko_no_ko, penis, perineum, pleated_skirt, school_uniform, serafuku, skirt, skirt_lift, solo, spread_anus, testicles, upside-down