I think the title is a little too hard. To the reader and to me to write it. The thing is a couple of days ago someone I knew died. It feels awful to understand what it means. To understand he’s dead.
I think I can call him a friend. He’s a year above me, but we spent nearly 6 years studying together. Not school material, but mathematics. Since I was a little kid my parents and school realized I was great at math, so at school I started to compete in some sort of competition relating the resolution of logical mathematical problems. We “trained” for that in what later turned into a “Math Club”. He was there. We didn’t play video games together, nor we hanged out somewhere else. But I knew him, in some way I feel that. We even traveled together several times to attend “special” classes in the capital!