たばこを自分で巻きます。
It´s difficult to write that in japanese, i mean most of german smokers, me including, made their cigarettes by themselfes. All you need is a filter, paper and tobacco!
In german you should say: Ich dreh mir mal eine 😉
But i think most of the japanese smokers buy a box or case of done cigarettes. I don´t know if you can buy utensils in japan to build your on cigarette?? But of course, there are shops where you can buy such things! (hope so!!)