Oh, so it's that kind of question. That clears it up. Setsuna realised. He took his time collecting his thoughts before speaking up, his eyes still scanning the forest for potential threats. "Well, you haven't shown us your semblance enough for us to conclude that matter, and you are wearing a lot of blue." Setsuna examined Taro in a bit more detail, eventually letting his gaze fall upon his sword. "And as far as I can tell from both sight and usage of your sword, that has to be true. I'm calling your bluff on being a faunus."
Setsuna then paused for a short while, considering Calen's options. He really didn't know much about the boy, apart from being a glib speaker, excellent observer and a good fighter. Both his first and second claims held water, but those were only mere conjectures. The other two, however, showed less promise. Sure, Calen could have run into a giant nevermore, but unless he had help, Setsuna doubted he could have fought and lived to tell the tale. Or maybe he was just that good. On the other hand, Calen would have had to train via an outside source if he didn't go to a prelim combat school. Unlikely...but eliminate the impossible, and whatever remained, no matter how improbable, had to be the truth. "For Calen, I'm saying you didn't run into a Nevermore. Either that, or show me your battle scars."
For him, well... "My turn. 1). My weapons were reforged twice over, 2). I got impaled by my own sword once, 3). My semblance's afterimages are just for show, and 4). One of my hobbies is to do with anything mechanical." He couldn't wait to see what his team thought of him.