My hero academia oc story

Acantha Komori is a student at U.A. Her quirk is Darkness mimicry. She can turn into shadows. She can make the shadows solid if she wants and she can change the shadows shape. She can also turn some small things into shadows. If she uses her quirk to long sometimes a part of her body is stuck as a shadow but it turns back to normal after a while. It is harder to control in darkness