When will you put another new feature other than sex? For example, being able to tell Nezuko to stay in her full demon form with her fully developed developed figure, (adult), and that we can interact with her as normal but this time in her demon form until telling her to change to her human form again or you could put a scene where Mitsuri grows her muscles or flexes them because of the theme that she is strong in the physical sense in the manga/anime