The "Hokkaido Mountain Incident" is a mysterious case involving two Tokyo climbers, Fujita and Mori, who got lost on Mount Asahi in 1989 and were rescued after an SOS sign was spotted. Strangely, they hadn’t created the sign, leading police to investigate further. The sign was traced to a prior climber, Kenichi Morita, who went missing five years earlier. Police found Morita’s remains and an eerie tape recording of his last, desperate pleas for help. However, mysteries linger: Morita lacked tools to create the SOS sign, and records show he was the only missing climber at the time. The case remains unsolved, shrouded in eerie, unanswered questions.