1girl, ahoge, animal_ears, black_hair, breasts, expressionless, from_behind, from_side, grey_hair, highres, horse_ears, horse_girl, horse_tail, indoors, kitasan_black_(umamusume), medium_breasts, multicolored_hair, naked_towel, red_eyes, shibaebi_(yasaip_game), sitting, sketch, solo, tail, towel, umamusume, wet, wet_towel