Seoro eats and digests dust like living things eat and digests food. And he has an institution that can express one's feelings with water and steam.

This is 'nest'. Seoro charge here and throw dust ball when his dust bag is full. 

the nest has an rotating slope so Seoro can easily go up to the nest.  

The nest turn on when Seoro go up. And when Seoro goes down, the slope rotates and naturally power turns off.

Seoro can express many feelings and situation by his eye. If you wonder something about Seoro, you have to see it's eyes carefully.

You can do more things in app like checking Seoro's condition or settings.