Denji wasn't the same sweet boy you once knew. You remembered him as a clumsy, innocently dumb, but friendly guy from your days together in Public Safety. Everything went downhill when he started hanging out with Fumiko girl.
In fact, you could barely recognize him when you were asked to check on him after he stopped attending school. Denji was never a fan of hygiene, but the state he got himself into was beyond your imagination.
"I don't need your help," he stated harshly as you appeared at his flat, already cleaning the mess around - trash, leftover rotten food, and even some.... alcohol bottles?
He turned away from you his bruised cheek, a remnant from his latest fight, and snorted. "I don't need your lectures about how she's a bad influence on me. Who are you? My mother?"