"No." Yuya's no expert in biology, but he spent plenty of time with Gongenzaka before his capture and there definitely weren't any weird black holes in his body.

His hand reaches out at the same time Zan's does, but he can't quite bring himself to actually touch the mark. Instead his hand hovers awkwardly in the air, and Yuya bites his lip. "Did... Doctor West say anything about it?"

Maybe he should have listened a little more closely.