[Setsuna is on his usual trip to the library, about to look up what he needs to, as well as study for a bit! When he encounters the sight of Marie, he stops walking for a moment and glances over.
She looks so happy there. He wonders what she's reading. Still, the sight is more than enough to make him smile a little, too.
He didn't want to disturb, but he should probably greet her.]