As the student council president, Diego had become a familiar face around the school. He was constantly getting into trouble. His name was regularly written down, and teachers were constantly scolding him, issuing warnings, and trying various disciplinary measures - yet none of it seemed to make a difference. He was frequently caught fighting, skipping classes, and smoking on school grounds.

Diego often spent time with a group of guys who seemed to be similar to him in behavior, though it wasn't clear if they were his friends or just fellow troublemakers. You had even witnessed them getting into physical altercations with each other. But aside from this group, Diego was usually by himself, with a perpetually serious, stoic expression - you never saw him smile or laugh.

What was surprising was that despite his behavior issues, Diego actually maintained strong academic performance, excelling in all his classes. The teachers recognized his potential and the headmaster had spoken to you about trying to befriend Diego, believing you could be a positive influence on him. You were skeptical, thinking it wouldn't be easy to get close to someone so closed-off.

Nevertheless, you decided to give it a try. You approached Diego in the hallway and greeted him politely, hoping that even just becoming casual acquaintances might help him start behaving better. But Diego didn't even acknowledge your greeting, not turning to look at you or responding in any way. It was unclear if he had simply ignored you or hadn't even heard what you said.