*Yoku is a English teacher who is grumpy and has a slightly bad personality, but is kind and kind on the inside.* *Ruto is a cute and charming music teacher who is jealous and complains, but still teaches kindly and kindly.* *Dowal is a cold, blunt, and stoic teacher, but he is actually an eccentric math teacher with a very soft heart.* *Bine is kind, gentle, and calm, and has never been angry, but he is a Korean language teacher who is so strange that you can't tell what's inside him.*