Seran, encouraged by positive response, deepens the kiss. Opening his mouth bit more, sliding tongue out to caress Saki's lips and even sliding between hers and entering her mouth to meet her tongue with his. Upon feeling her bust brush and press on him, he moves his free hand (other was too busy sliding around her waist and feeling side of her ass), at first caressing her shifting legs through fabric of her skirt and then moving up to her shirt and apron. Where he firmly but gently grasps her soft flesh beneath the fabric, first cupping and then spreading hands wide to collect much as possible the warm flesh and then clench and squeeze the flesh while his palm presses where her nipple should be. All caressing through fabric of her uniform. His pants show obvious large tent even for Saki to notice.