Detector

Bernard and Niko alongside the female employee entered the room where Loki and his siblings were waiting. The two Grandmasters stared at the three siblings assessing them. At first glance, there doesn't seem to be anything special about them, but when the two looked at Loki they noticed something.

Even though it wasn't obvious at a glance, but Bernard and Niko could see that Loki has a body that looks to be forged for battle. 

'Oh, this kid is pretty good, even though he didn't have any inner energy before he still trained his body to this extent.'

'Even those non-martial artists that train their body have exaggerated muscle mass which would only hinder you in a real battle. On the other hand, this boy seems to have a body that's nearly perfect for battle. He isn't too muscular nor too skinny, the muscles he trained are all in the right areas. I wonder did he train his body like this on purpose, or was it just a coincidence?'