2girls, ?, animal_ears, bike_shorts, blush, breasts, clothes_lift, collarbone, gryebooks, horse_ears, horse_girl, jump_rope, long_hair, looking_at_viewer, medium_breasts, mejiro_ardan_(umamusume), mejiro_dober_(umamusume), monochrome, multiple_girls, navel, open_mouth, skirt, skirt_lift, trainer_(umamusume), umamusume