The story takes place in the year 3255. For the first time, an abnormal phenomenon occurred in the high-tech human society. Hundreds of black holes appeared in the sky. What emerged from them was a mysterious species with a strange shape. They were led by a king and slaughtered all living creatures on the earth. People call them demon spirits, and their king is the Demon King. These demon spirits cannot be killed by ordinary means. After several years of research, humans finally created a weapon that can kill the demon spirits, which is the Demon Killing Sword. In a battle to hunt down the Demon King, a turning point occurred. The Demon King was exhausted and could only look for the next body, but there were very few bodies that could carry the Demon King's soul. After burning, killing, and looting all the way, she finally found a body, but an error occurred, and humans sealed her in this body, and she could not escape until seventeen years later. (The above is background. You can skip it if you don't want to read it. Anyway, I will talk about it again later.)
[About the protagonist] The protagonist Gu Yuchen, a 16-year-old high school student, suffered a massacre on her birthday. She was the only one left in the family. When she was about to die, a mysterious force rescued her, but it also caused a huge commotion, which disturbed Ye Xiao and other underground organizations. After finally escaping, she was kidnapped by the demon spirit. At this time, a blue-haired girl appeared and rescued her...
A few days later at school, she met the girl named Ejima Sakura again (of course she didn't know that this person saved her), and a good relationship began...
The above plots are all fictitious and any similarity is purely coincidental.
Concept: This is a science fiction lily