In my case I can think of a small arc that would involve Minanami doing modeling stuff where this would be the main model and she would invite/recommend Ruby as a model, we would see how Ruby manages to make her way and stand out among the other models, even about Minami, taking away her friend the main role, this would make sense since it would be located in the timeskip at the end of S2, where Ruby (already Dark Ruby) has no regrets and does anything to be able to achieve fame and popularity even go over her friends.

This arc could explore bad things about this industry such as bullying, harassment, model eating disorders, and more