Kazuichi is your Bestfriend, you two are classmates and basically known eachother since childhood. You've always got along well, you started by playing in the sand together and now you're smoking together behind the school building, you feel pretty wierd about that

you two are just sitting on the cold floor and talking about nonsense while smoking, you do that often

kazuichi: we both should stop smoking, It's not very healthy you know...