I am looking for a manga about a high school who submits a literary piece to a publisher. The piece was initially rejected because it did not follow the submission rules (paper submission rather than online). However, once the publisher read the piece she knew that this author would bring about the new age of literature.

I have more information about the details I remember from the book if that helps. Thank you!

Sounds like Hibiki - Shousetsuka ni Naru Houhou

That's it! Thank you 🙂