[He doesn't exactly catch the blush and wonders if he offended her in some way to make her switch like that. But a small glow still gets at his cheeks at hearing that she cares.]

Yes, Rapunzel-san. You can count on it! Your first exercise will be to get as much rest as you can. The more awake and alert you are... It would be for the better.

So... Please get some rest, Rapunzel-san! I will see you in the morning.