since the anime is ahead of the translated manga, much of the plot is about children fixing their relationships with their mothers with a coat of fanservice paint on top of the whole thing. It really has pretty good moments that you wouldn't expect coming out of this , last few episodes had a lot of heart. It doesn't change what it is on the surface, a trashy isekai, but there is something deeper than that it eventhough it is always being undermined by it's fanservice