[He seems content to just keep his hand against hers for the time being, though his expression immediately sours at the idea of just having to pretend that nothing had happened in case an invisible, omniscient force were to notice something was amiss and forcibly change things.]

I don't want you to go back, either. If I ask, would you please stay with me...? We can make it seem like a more natural transition. Living in that sort of environment, it would make sense for you to want to escape, right?

[It's a somewhat slapshod attempt at keeping things together, but he'd take the risk if it meant keeping Chizuru safe.

Before he can say anything else, though, she's carrying onward and what she says is enough to leave him briefly surprised. The note that he had left in the plant is long forgotten now.]

How did you know about that—?