Fei Mu traveled through time. To be more precise, she was summoned like a shikigami in a mobile game that she had abandoned for a long time.
The person who summoned her was the protagonist in the game, Abe Seimei, who would do anything to know her real name.
When Himu asked him the reason, Abe Seimei stared at her with a smile without saying a word, making her feel as if she was about to feed Bodhidharma to SSR, which made her tremble.
In fact, this is a fanfic where all members turn to black. I would say