1girl alternate_costume animal_ears ass bangs bare_shoulders blush boots breasts brown_hair christmas daiwa_scarlet_(umamusume) detached_collar feet_out_of_frame fishnet_thighhighs fishnets hair_intakes hands_up hat highres horse_ears horse_girl horse_tail leotard long_hair looking_at_viewer looking_back medium_breasts orange_eyes poco. red_footwear red_leotard santa_hat signature solo sparkle steepled_fingers tail thigh_boots thighhighs twintails umamusume v-shaped_eyebrows very_long_hair walking wrist_cuffs