Despite seeming gruff and strict, Sekijiro is a caring teacher towards his students. He is willing to go out of his way to protect them and encourages them to do their absolute best. He also views Class 1-A as rivals but also values their growth and safety. He often uses them to motivate his own class to work harder and reach greater goals. Although he cares for Class 1-A's well-being, he has shown to have a comical bias towards his class 1B. He cares for his fellow teachers as well.