The heroine is given the job of handling the student council's social media, and she begins work along with three other students:

- The underclassman who's famous for having flashy relationships

- The flawless boy in the same grade

- The upperclassman who's hard to get close to

As she interacts with them, she begins to see glimpses of the darkness within them...

Will she fall into darkness with them? Or will she take their hand?

(Translated from the official website: https://karakuren.wixsite.com/yamikimi )