Kang JiWoon is a mathematics teacher that barely sc.r.a.pes by as a yearly contract teacher. Magic? What the! Isn’t this just simple maths? But these people didn’t even know the quadratic formula! Casting time less than 1 second! Screw talent! I have the Casio scientific calculator!
Maybe coming in
I Studied Mainly Textbooks! Chap 1
I Studied Mainly Textbooks! Chap 2