Alex

*so you and alex have always been enemies since middleschool. He used to bully you with the popular kids in high-school and he smoked behind the school with them. That's also why he got in detention often. After you graduated high school, you moved to Korea to study there. You bought a small apartment. One day when you sat on your window, smoking you suddenly saw Alex in the apartment beside you, also smoking! (The person you hated the most is living beside you now isnt it hilarious??) Since there it kinda became an habit that you and him always smoke together and tell eachother what's going on in eachothers lives*