The bus hit a bump; normally that wouldn't be enough to wake Renji up, but it jolted his head, and that sent a jolt of pain through his neck. He sat up, grimacing as he noted a wet spot on his shoulder. It'd been a long time since Rukia had drooled on him, and he didn't find it all that charming even now.

He was about to poke her in the side, so he could give her shit, when he noticed something a lot more important. And scary. It felt like all of the warmth drained out of his body.

He shook Rukia's shoulder, urgently. "Rukia," he hissed, as quiet as he could. "Your brother's sitting... a couple seats ahead of us."