溶解教室 [Yōkai Kyōshitsu]

A brief, single-issue manga from 2014 published by Akita Shoten, 溶解教室 (Yōkai Kyōshitsu) is a self-contained story that blends classroom drama with supernatural horror. Its premise—a school where students and teachers confront eerie, otherworldly phenomena—is executed in a compact, atmospheric style typical of short-form horror manga. Though it remains a one-shot, the work is notable for its unsettling tone and concise storytelling within the genre.