As it turned out, the guy he was disguising himself as was Henki, and the only reason he was being ostracized here was merely because he was the weakest!
Perhaps it was because they were born as experimental subjects that this group, The Forgotten Ones, was filled with an inferiority complex, one that seemed to be etched into their very genetics. It was for this reason that they always moved about in large armors, even at home. And also because of this mentality, they instinctively rejected the weak, as shunning the weak would make them appear more like powerhouses. Evidently, Henki was the weakest here. And Henki's squad was also the weakest on the training ground.
The weakest of the weak, it was no wonder he received this treatment.
On the field, if anyone in the other teams didn't train properly, their instructor would threaten, "I'll send you to that worst squad with Henki!" Then, that person would immediately start training desperately.