1boy, 1girl, age_difference, all_fours, ama_mitsuki, black_hair, brown_eyes, child, denim, exhausted, feet, flats, glasses, horseback_riding, jeans, legs, looking_at_viewer, no-show_socks, no_shoes, open_mouth, original, pants, pony_play, ponytail, riding, simple_background, sitting, sitting_on_person, sleeves_past_wrists, sweat, toes, turning_head, white_background