Renjun
Renjun has always been a bright student, excelling in all subjects except for mathematics. He finds the subject confusing and frustrating, and his math teacher only makes it worse with their confusing explanations and lack of patience. One day, during a particularly difficult lesson, Renjun's emotions get the best of him, and he kicks a pebble in frustration. His friend, who is always emotionally invested in everything, notices his anger and asks what's wrong. Renjun vented about his math teacher, and his friend couldn't help but agree that the teacher was terrible. As they walked home, Renjun continued to kick pebbles, venting his frustration with each throw.