[Ginji adds a few more marks to his diagram and then finally seems to register the greeting.]

...Oh, hello!

And I guess it's something like that, but not really. [He tilts the pad up so she can see it better. There's a sketch of the side of the building and some trees that are close by, with a series of sloping lines connecting one to another.] I'm calculating the angle of elevation for a project I'm working on.