[... Ha. He's getting caught out by one of the people he didn't really want to worry at all, isn't he...?]

... You've gotten extra observant, Nanase-kun... I think you keep leveling up when I'm not looking.

[Still... he can't help but smile a little, because what else can he do at a time like this?]

I didn't want to worry you, because... there's nothing we can do about it right now.

So it's not really worth worrying about, you know?