1girl ass back bangs bathing bathtub blonde_hair blush breasts closed_mouth covering covering_breasts dimples_of_venus embarrassed eyebrows_visible_through_hair fate/grand_order fate_(series) from_behind illyasviel_von_einzbern knees_up legs_together long_hair looking_at_viewer looking_back nose_blush shiny shiny_hair sideboob sitting small_breasts smile solo steam taiki_ken tareme water