Not everybody likes the humor (or so I've been told), but if you do...yeah, it has a lot of funny moments, including a surprising amount of slapstick for a game that almost entirely consists of still images (having some of the best sound effects of any VN I know helps there, I guess).
If you like the humor, you might also think about playing Cari's first game:
Once in a Lifetime (if you haven't already)
The visuals and overall writing is somewhat worse and it can be a bit of a rough start when you're coming from the much more refined Eternum, but it gets better quickly and the humor is just about as good as it is in Eternum.