Beast Slayer's disdain was clearly hidden from those who surrounded him though, as he made sure to keep his presence hidden and unknown from the excited and exuberant Altered still in the testing centre.
As his older brother, he would naturally get compared to Kye, and he even had all the spotlight for himself after he awakened and for the few years after that. His Soul Ability made his whole family basically focus on his development solely, since having someone with his potential would naturally create an incredibly powerful heir for the Renfield family.
However, things quickly took a downturn when his younger brother, Kye, reached 16 years of age and was eligible to enter the Beast Domain.
From the get go he showed more promise and potential than Beast Slayer ever did, with the only thing Beast Slayer holding over him being his incredibly powerful and overpowered Soul Ability.
But even considering that, Kye was just better than him on all facets.
