![2girls abubu age_difference all_fours arched_back back bad_id bad_pixiv_id bangs black_hair blonde_hair blue_eyes blush bow bra bra_removed breasts check_translation clothes_removed collarbone commentary_request condom condom_packet_strip condom_wrapper dogeza dress dress_removed elbow_gloves folded_clothes frilled_gloves frilled_legwear frills futon gloves hair_between_eyes hair_bow hair_over_shoulder hair_ribbon hair_tubes hakurei_reimu half-closed_eyes hanging_breasts hat hat_ribbon indoors large_breasts leaning_forward light_smile long_hair mob_cap motion_lines multiple_girls naked_dogeza nipples nude orz panties panties_removed pillow puffy_nipples raised_eyebrows ribbon seiza shadow sitting smile speech_bubble spoken_blush sweat tatami thighhighs tissue_box top-down_bottom-up touhou translated translation_request trembling underwear v_arms white_gloves white_legwear yakumo_yukari rating:q score:83 post #2196973](/cdn_image/preview/56/71/56717ef18676faf84edbcda406d1ec81.jpg)
An element of Japanese manners by kneeling directly on the ground and bowing to prostrate oneself as touching one's head to the floor in order to show deference to a highly revered high-class person, as a deep apology, and to express the desire for a favor from said person.
For the pose itself (without the intent of deference or apology), see orz.