**NSFW** This has smut, so do not read if easily offended.
After becoming friends with John and Sherlock, you actively try to help Sherlock on his cases. You have been apart of many cases over the years. However, one particular case, involving black paper lotuses and a invisible killer that can "go through walls", has Sherlock absolutely stumped. Being the dutiful and caring friend, you try your best to help solve it, even it means dealing with Sherlock's strange but entertaining... frustrations.