Nero's Master, Rainer, had been wearing a frown on his face after he first saw his Disciple ever since the latter broke the artifact that allowed them to see and hear whatever he was seeing and hearing.
The last time they saw Nero was when he was about to face off against Lux.
Everyone in Wildgarde Stronghold was now fully aware about the bad blood between him and the Half-Elf, who was currently in the limelight.
Truth be told, Rainer was long worried that the pent up jealousy, envy, and hate that Nero held towards Lux would hasten the growth of the Seed of the Abyss in his heart, which would lead to the corruption of his mind.
However, a glance was enough to tell him that although Nero had fully embraced the Seed of the Abyss in his heart, he was still sane and was able to make rational decisions.