At first, when my friend told me to watch this anime and I looked it up and found out it's about science I was like "Hell Nah man I ain't watching that" but after every episode, you become more and more hooked to the series and it becomes more and more interesting.

The character development is 10/10
Story 9999999/10
Art is unique and shows that it really has been thousands of years since the modern world got petrified.
+
you will learn some pretty useful survival tips and knowledge.