Resting her chin on her hand, Louisa was observing the professor very closely as she greeted her students rather dutifully. Hmm. It seemed that the bad temper she had when she caught them at the library was still on. The clumsy ponytail she had behind her head proved it.

Oh well. She wasn't going to spend another night in that dungeon. Taking her eyes off the professor's face, Louisa busied herself with arranging her quill and parchment for when the lesson would start.

And it did.

Raising her hand, a bit lazily, at the usual first question, she spoke, "There are two systems to practice Arithmancy, professor. The Pythagorean method which includes the number nine, and the Chaldean method that doesn't include the number to represent letters." Easy.