Part of the setting comes from other books. Someone travels into a near-Earth civilization and discovers that he has the ability to reproduce and a series of unexplained abilities. After the seventh cycle of Gou, the boy's hometown was hit by a flood and epidemic, and he began to contact the outside world and use his knowledge carefully.
The humanistic background of the world in this article is similar to the Spring and Autumn Period and the Warring States Period, and the natural background is similar to the Earth. The protagonist is a carbon-based creature that lives in the sea and has a shape similar to an octopus.
Purpose: A true warrior dares to face the bleak life.