Shiro continued to look at Quinn, not asking him the question he had deep down. It was as if he was intimated by who this person was after finding out who he was. For Quinn though, seeing he was debating internally on what to do, it wasn't a good sign.
"Let me ask you a question." Quinn finally said. "Do you want to join the Cursed faction, or are you only interested in joining because you want the power that Sil mentioned?"
At this point and time, although Shiro was interested in the Cursed faction, he still couldn't get out of his head that his life would be better to join either the Earthborn or the Graylash family, he just didn't know enough about the Cursed, and ultimately he knew he was doing it for the ability, and it was an ability he really didn't know about.
He was just taking Sil's word that it was an ability that was stronger than the Graylash. The sudden opportunity that was now in front of him was tempting.