The one-shot manga "Kai Otoku Kyoshitsu," which has been a hot topic on social media, is finally getting a serialization! We will deliver "Y's" special ghost stories to you in the fleeting moments of your everyday life. This story is a beautifully written tale, interwoven with some fiction, that combines records collected over many years by a certain person about "something that cannot be explained in words, that cannot be understood by the mind" that lurks right beside everyday life, and the raw memories of people who have simply come face to face with them. A bizarre and mysterious horror story of true yokai tales, presented with beautiful artwork based on the "Magabanashi" ghost story notebook!!