To give context on the focus on her feet the artist has a foot fetish, it's not that hard to notice
You could have checked out the artist pixvi before they deleted/made a new one and it was clear as day about their foot fetish as well as NSFW stories of the two main characters
Artist/writers will always try to squeeze in their fetish and no one really has an issues. Again we get boob and ass shots all the time in manga you kinda learn to just ignore it or embrace it.