Another grin was given to the professor, and a salute back at Adi. His fellow rocker dude always seem to be in high spirits, eh? The Slytherin went back to his book, and continued to read that particular chapter wherein he saw the same grid as the one that is now on the floor. Why it is on the floor, he doesn’t know. So, perhaps it was a game?

And…what is a Sudoku? Or even a Four Square? Nine Square?

Sure, tic-tac-toe is plausible…but he couldn’t quite match it with anything Arithmancy related…oh wait, yes he can. It was the only chapter in their book that had a square, divided into nine squares, so maybe, his initial guess was right.

All the way at the back, Ethan raised his hand and waited for his turn to answer. “Are we going to learn the Arrows of Pythagoras, professor?” Well, he really wasn’t sure why the grid was on the ground…so his answer was still a guess even if the ‘art’ resembles the one in their books.