So she's using Steven to get to the rose... Yuya doesn't really understand the technical parts of it, or even what the Blue Rose did to him originally. But he doesn't need to in the face of how much agony it's causing Steven. Something hot and furious starts to boil in Yuya's chest, but he swallows and forces himself to keep that feeling buried deep for now.

"I'm sorry." Sorry Steven is suffering, and also sorry he didn't do more to stop this from happening in the first place. He can't help a pang of guilt, remembering Joker's admonishment for their lack of plan, for his inability to forcibly free Steven from her grasp. "When we free you, I bet the Ringmaster can help."

When, not if. Yuya refuses to accept a failure, here. "She doesn't have you entirely. You still found me this way, didn't you? Can you keep finding us in our dreams?"