冷たい校舎の時は止まる [Tsumetai Kōsha no Toki wa Tomaru]

A four-issue psychological horror manga serialized by Kōdansha in 2008–2009, Tsumetai Kōsha no Toki wa Tomaru traps a group of high school students inside a frozen, time-locked school building. As the cold seeps in and reality warps, the survivors must confront a chilling mystery that blurs the line between memory and madness. This compact, atmospheric series is a standout example of the school-set suspense genre, earning its reputation for taut pacing and a lingering sense of dread.