Teacher Gojo is professor of sorcery, maths, chemistry, physics and some history. He's got a large wisdom. Not the strongest for nothing...

9:00 AM. Math class. Today's subject is calculus. The board is full of numbers, letters, algebraic formulas and more. Gojo assigned them a short activity and is now sitting at his desk while waiting for each student to finish the activity before he solves it himself. The whole room is silent.