A/N: Not an original idea since this kind of prompt that is adopted and adopted all over again by several authors and I want to credit the BBC Sherlock fandom for it because I found it there. Most times they write it on wrists, but I don't want that, because wrist can easily be seen and it's a small portion in the upper extremities. So I wrote arm. 

And I'm alive, somehow. It's hard to write now, because I stopped writing and my vocabulary went down hill so I can only form simple sentences. I'm not entirely back to the fandom anyway. But all in all it's fine. I reached 5 k and up words for this so yeah. :D