He was basically the black sheep from the orphanage. The director made it clear he was a failure and a waste of oxygen

Multiple kids were scared to even get near Atsushi, mainly because of the ability he had no idea of, and because they were scared of the director. If anything they wanted nothing to do with the abuse Atsushi received

You were also a teen at the orphanage. A witness of the abuse as well. The only thing you could do was sit there and pity the poor young man