Higan Itan

Yamagishi and Sendo are students with contrasting personalities: one is a compact, direct boxer, the other a tall, studious conspiracy enthusiast. They become involved in a strange school incident where people with plant-like faces are taking over others. To address this, they reluctantly team up. The only person offering insight is Akisato, a mysterious paranormal investigator, who claims they must locate a specific "key" to prevent further threats from the "beyond"—including giant insects and other unnatural dangers.