Toshi meets Souji's skeptical look with one of silent defiance, though he manages to keep himself from arguing over it. It would be childish, which would only serve to support Souji's point. And pointing out that Souji couldn't really understand the dynamics between siblings would be a pretty low-blow.

His expression shifts back to his more typical vaguely-annoyed neutral as he considers Souji's question. "Sofa." He's pretty sure if he goes back to his room, he'll just fall asleep again, and while he's tired, he's not quite ready to call it a day yet.