Can we just take a moment to appreciate this picture? Just take a nice long look.
This is obviously John in the wake of Sherlock’s death. He has grown a mustache to make himself look somewhat authoritative, more intimidating than Series 1/2 John.
Also, take note of the long coat and scarf, along with the gloves in his hand; all things Sherlock used to wear. He’s subconsciously trying to fill in for Sherlock, in his own mind and for the people around him who also lost a dear friend.
If that isn’t heartbreaking, I don’t know what is.

Can we just take a moment to appreciate this picture? Just take a nice long look.

This is obviously John in the wake of Sherlock’s death. He has grown a mustache to make himself look somewhat authoritative, more intimidating than Series 1/2 John.

Also, take note of the long coat and scarf, along with the gloves in his hand; all things Sherlock used to wear. He’s subconsciously trying to fill in for Sherlock, in his own mind and for the people around him who also lost a dear friend.

If that isn’t heartbreaking, I don’t know what is.