Before you watch, let me tell you this anime is 4 minutes length per episode.
But, yeah, I do learn something about this, haha, not literally good but quite entertaining
I thinks the story took place in somwhat 2020 years, but not sure, it's one of lessons I realize by watching this animation.
1. Human are limited.
Off course we are, haha, we have limited movement, limited strengh, and ...