Yi'an's name was chosen by herself. On the surface, it was to recall the stable and peaceful life of ancient humans in the legend. In fact, only she knew that it was just to complete the task of naming herself before the coming-of-age ceremony assigned by the teacher, and she chose the homonym of the assessment rank.
In the year 233 of the New Calendar, in order to guard against various highly aggressive mutant organisms that appeared from time to time, mankind closed the country in isolation and began to compete with the out-of-control nature. In a selfish and cruel world, a young girl hero emerges, breaking the depression and panic of boredom, and throwing a bucket of colorful paint onto the gray canvas of the world!
Concept: Heroes are not symbols, they are people of flesh and blood. Everyone can become a hero.