Rule 34 Dev - 1girl alternate_costume blurry blurry_background brown_eyes brown_hair christmas closed_mouth cup hair_between_eyes hair_ornament hat highres holding holding_cup horse_girl matikane_tannhauser_(umamusume) medium_hair mug night otono_(bkt4b) santa_costume santa_hat scarf simple_background smile snow solo umamusume|24606887175