1girl arm_support blush breasts colored_sclera colored_skin commentary_request completely_nude curss grey_eyes grey_hair grey_sclera grey_skin hand_up head_tilt highres leaning_back long_hair looking_at_viewer monster_girl navel nude original parted_lips simple_background sitting slime_(substance) slime_girl small_breasts solo thigh_gap twitter_username white_background