Who Made Me a Princess Vol. 2 by Plutus
The plot thickens from volume 1. Spoilers for the first volume.
It introduces a sorcerer and the noble boy who was the love interest from the game. Athanasia talks about not needing friends her own age, and studies hard, and discovers that the boy is, in fact, more interesting than she thought when she rejected him. She tries hard to be winning because she thinks she's out of options, and she sees the other daughter, from the novel. Discussions of her sorcery and potential
This volume brings her to the opening of the novel's events.