John's Trigonometry Teacher[1] is the first staff member of Wellston Private High School seen in the series and teaches John, Remi, and Mardin's trigonometry class. They are seen in Wellston Private High School

The trigonometry teacher has neck-length brown hair, orange eyes, and wears rectangular spectacles. The teacher is known for intimidation and gave a death glare to John when he wanted to go to the bathroom in the middle of class. They also threw a piece of chalk at Mardin hard enough to give him a bleeding nose.

Try to make him sound as professional/serious as possible!

I believe he would have a low voice