In Japan, summer is the peak season for scares! Rooted in the Obon festival and the cultural tradition of suzumi, sharing spine-chilling ghost stories to literally "cool down" from the sweltering humidity, horror and summer go hand-in-hand. Start your descent into fear with 30% Coin Back on Volumes 1 through 3, and keep the nightmares coming with 25% Coin Back on all subsequent volumes of participating series!

Ends September 18, 2026 at 11:59 PM PDT

Serial murders start happening in Tozama City, a suburb of Tokyo where a fifth grader named Shinta lives. The killings are so horrible, it's almost like the killer himself isn't human. The keyword that comes up during the investigation is 'M.J'... Is that the name of the killer? After the killings, Shinta's classmate Junpei disappears, but is later found in the sewers. "I can control M.J with my mind," he confesses. Shinta doesn't believe him, but soon enough, tragedies happen just how Junpei predicted they would... In order to uncover the mystery of M.J., Shinta makes a call to Sakaki, an assistant professor from the medical department at T University, who knows M.J's past... This manga contains "Prologue: M.J -Son of Sam-, 'I Saw Him!!'" and other chapters.