1girl absurdres afloat arknights astgenne_(arknights) bangs bare_shoulders black_one-piece_swimsuit blue_eyes blue_hair breasts casual_one-piece_swimsuit closed_mouth feather_hair highres long_hair looking_at_viewer northkiyou one-piece_swimsuit outstretched_arms ponytail small_breasts smile solo spread_arms swimsuit swimsuit_skirt very_long_hair water