1girl, animal_ears, ashinowoto, bathrobe, black_jacket, blush, brown_hair, ceiling_light, cellphone, grey_eyes, hand_in_own_hair, holding, holding_phone, horse_ears, horse_girl, horse_tail, indoors, jacket, locker, long_hair, looking_at_viewer, nice_nature_(umamusume), open_mouth, phone, rug, smile, solo, tail, twintails, umamusume, walking