Today is the comic's birthday! I've been making this comic for six years now.
This year's celebrative illustration is a different take on the scene in Chapter 16 when Val and Adrien have that conversation through the closed door. The way it goes in the comic, we can only see Adrien’s side, and Val is only present as a voice... but in reality, they are next to each other, only separated by the door. So close, and yet so far away.
(The artwork above is also archived at the TGOD Extras site, here.)