A narwhal sticks a stick into the dirt to see what might exist underneath it. Narwhals live in the sea, you see. So they're convinced nothing can exist anywhere else.
The narwhal can't find anything but it can't stop thinking about what could exist outside of its world. It pulls out a xylophone (ざい) and starts tapping the keys with its horn. It plays a sad song about the meaning of life and whether existence is worth it.