Rule Horror: A Female Ghost Pins Me to the Wall from the Start

[Primarily mystery-solving + national destiny + no overpowered protagonist early on, relying on deduction + progression-style power fantasy + no romance + original or adapted rules + suspense and horror]

A live-streamed rule-based horror game suddenly appears.

Chen Zhong is unlucky enough to be chosen as a player.

His first instance: the study room rules.

[Do not fall asleep during study hours. If you do fall asleep, do not wake up until dawn.]

[If you notice a new face entering the study room, be sure to pretend you didn’t see them.]

[If you are more than ten minutes late, do not enter the study room. Leave the teaching building immediately.]

Chen Zhong wakes from a nap and stares pensively at the female ghost walking in from outside...