Orochi Longevity

The snake has lived for twenty-one years, and its whole body is more than one meter long when stretched out.
This was already bigger and longer than the mother it remembered.
After the last brother dies of old age, the snake will gain a power for every additional year it lives.
In the first year, it acquires the ability to think.
In the second year, it was inexplicably able to understand human language.
In the third year, it got the death cycle...
As long as it keeps on living, it can keep getting stronger.
The snake began to chase its own road to immortality.