1girl, animal_ears, arms_behind_head, arms_up, backlighting, black_skirt, blush, breasts, brown_eyes, brown_hair, crop_top, crop_top_overhang, ear_ornament, grey_shirt, hair_tie, hibimaru, horse_ears, horse_girl, indoors, large_breasts, long_hair, long_sleeves, midriff, mouth_hold, navel, necktie, red_necktie, satono_diamond_(umamusume), school_uniform, serafuku, shirt, skirt, stomach, tying_hair, umamusume