Bryan Konietzko has been publishing quite a few cosplay pictures from Comic-Con lately, but it looks like he’s ready to take a break from that. In place of cosplay pictures, Bryan has posted an image from Book 2 – this one depicting Bolin and Asami in front of the Pro-bending Arena at some point during the night. In the scene, both characters look very down and depressed. It’s a bit odd to see Bolin this way unless he’s heartbroken. There’s no clues hinting at a potential reasoning for the mood, but it’s quite clear that something regretful has happened.
Perhaps something has happened to Korra or Mako? It’s all baseless speculation at this point – it can’t be proven right or wrong since the scene is still very much a mystery. Be sure to check out the image below and leave your thoughts on what could’ve happened: