Fang Huan met a super invincible time machine that claimed to be condensed from the essence of five thousand years of Chinese culture, referred to as a light machine. And he, who was a middle schooler inside, agreed to let Guangji go on adventures with him. However, why do yanderes exist in China's 5,000-year-old culture? . .
"Thanks to that person, I found that I suddenly turned into a crying fool, but why, why was I the only one left again?"