The End of Ten Days: Campus Rule Horror

[The protagonist’s name has been changed to Qi Dong! The infinite-flow setting has been changed, too! Now it’s better suited to fans of suspense and urban legends!] [Welcome, everyone!] - Qi Dong is reborn once more, carrying his memories from the Land of the End! But this time, he isn’t waiting for the Liar’s Game with the man-sheep! Has he somehow ended up in a small rule-based horror world instead? The school is sealed off for ten days, and everyone receives a message. [Please follow these 23 rules. You may leave once the school reopens in ten days. Any students who leave early...]