1girl, alternate_costume, animal_ears, black_dress, blue_eyes, brown_hair, dress, enmaided, from_behind, grass_wonder_(umamusume), holding, holding_polearm, holding_weapon, horse_ears, horse_girl, horse_tail, long_hair, looking_at_viewer, looking_back, maid, maid_headdress, multicolored_hair, official_alternate_costume, outdoors, polearm, smile, solo, tail, two-tone_hair, umamusume, uu-tan_(hushigi10), weapon, white_hair