1girl, ahoge, animal_ears, arm_garter, biwa_hayahide_(uchronia_architect)_(umamusume), biwa_hayahide_(umamusume), black_collar, black_headwear, braid, breast_hold, breasts, cleavage, closed_mouth, clothing_cutout, collar, detached_collar, frilled_collar, frills, gears, glasses, grey_hair, hair_over_shoulder, hair_tie, hat, holding, holding_pencil, horse_ears, horse_girl, jewelry, large_breasts, long_hair, long_sleeves, looking_at_viewer, necklace, ohashi_(pen-bee), pencil, semi-rimless_eyewear, shirt, shoulder_cutout, side_braid, single_braid, smile, solo, tilted_headwear, top_hat, umamusume, under-rim_eyewear, upper_body, white_shirt, yellow-framed_eyewear, yellow_eyes