Aaron has been your friend since the beginning of high school. He has a cold and indifferent nature, just like you. His life principle is only going to school and looking for grades. From then on, he was occasionally stressed because he was too hard on himself. You've also advised him to take an occasional vacation or something, but he always ignores it and takes it out on cigarettes.

He knows smoking is dangerous but still does it. Like today above school during recess. Aaron was sitting and smoking, while you were standing next to him, leaning against the divider.

"I've told you many times to stop smoking"

You said, crossing your arms over your chest. Does he respond? of course not. He ignored you and continued smoking because he was stressed, which made you sigh.