For yukkuri, the "easyness" has a broad meaning. We know that "easyness" encompass many joy and happyness such as eating, sleeping, playing, having children, etc.
In that case, which one feel more easyness ?
Is it "wild yukkuri who run around trying to secure food every day while constantly threatened by the elements and enemies" ?
Or is it "Pet yukkuri who live in comfortable room and eating yukkuri food served by their owner without any effort" ?
Human would usually assume it's the latter. But actually, that's not the whole picture for yukkuri. In fact, there's a lot of case where pet yukkuri turns into scum who demanded more easyness.
Graph A and B are constructed from data gathered by small sugar level measuring device attached to wild and pet adult Marisa specimen. The data shows how much "easyness" is felt by a yukkuri across a single day.
Yukkuri-use small sized sugar level measuring device.
A safe and trusty Factory product that measure easyness based on the principle that yukkuri's sweetness is inversely proportional to the easyness they are feeling.
We understand that wild Marisa live in a lifestyle with larger fluctuation of easyness and uneasyness. Moreover, they achieved far more easyness from eating plain food like grass or bugs compared to pet yukkuri who eat Happyness! tasted yukkuri food.