Rule 34 Dev - 1girl bed beret black_hair blush casual earrings hair_between_eyes hair_ornament hat heart highres horse_girl jewelry looking_at_viewer lying moeki_yuuta mole mole_under_eye no_shoes open_mouth simple_background single_earring socks solo thighs twintails umamusume vivlos_(umamusume) white_background|22459600332