Edwin frowned a little, unsure of how to respond when Oliver was sneaking in a little optimism, but still seemed so down. It didn't seem fair that something had come up again so quickly that had brought Oliver back down. They were already dealing with the after effects of finding a body, and not being able to stop monsters, and while, yeah, he didn't know what was coming now and it could be connected to those things, it still was disappointing that it came on the heels of an actual nice day.
He nodded as Oliver explained his grip on the mystery subject, wanting to say that they didn't have to talk about it at all, but knowing that that probably wasn't true. "That's okay," he assured him instead. "We'll work with what we can, and we'll just figure this out as we go."