ぼくらの百物語 ぎんいろの姫君篇

A notebook of scary stories created by everyone together. While looking through it on graduation day, I found a terrifying story with no known author. Upon investigating, the existence of a classmate who had disappeared without our knowledge was revealed. (The Enigmatic Scary Story)
A story so terrifying that anyone who hears it dies—what is the truth behind "The Cow's Neck"? (The Cow's Neck)
"Hello, I’m someone whose life was saved by your grandfather," said the man who came to visit—a man with the appearance of a crayfish. (Horror! The Crayfish Man)