What it says on the tin. Sherlock wears a blindfold while shagging John. Maybe for sensory issues, maybe to prove he's a bamf who can still tell exactly what John wants even if he can't see him... perhaps both? *hint hint nudge nudge*
I'll take whatever really, but a bit of a challenge from John would be lovely.
John does not top from the bottom though.

+ John puts the blindfold on him

It's completely Con on both sides.
No scat/watersports.
RTYIs welcome.

Thank you!